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Detalii evaluare #64913970
Rezumat problemă
#3622
Se dă un interval [l,r]. Aflaţi câte perechi de numere pare se pot forma alegând două numere din interval.
nEUROn
Bunget Mihai (mihaibun) Detalii
| Problema | perechipare | Operații I/O |
 tastatură/ecran
|
|---|---|---|---|
| Limita timp | 0.1 secunde | Limita memorie |
Total: 64 MB
/
Stivă 8 MB
|
| Id soluție | #64913970 | Utilizator |
Stancioiu Alex (AlexStancioiu)
|
| Fișier | perechipare.cpp | Dimensiune | 170 B |
| Data încărcării | 12 Iunie 2026, 12:05 | Scor/rezultat | Eroare de compilare |
Evaluare
Mesaj compilare
perechipare.cpp: In function ‘int main()’: perechipare.cpp:5:9: error: no match for ‘operator>>’ (operand types are ‘std::istream’ {aka ‘std::basic_istream<char>’} and ‘int’) 5 | cin >> 1 >> r; | ~~~ ^~ ~ | | | | | int | std::istream {aka std::basic_istream<char>} In file included from /usr/include/c++/13/iostream:42, from perechipare.cpp:1: /usr/include/c++/13/istream:325:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 325 | operator>>(void*& __p) | ^~~~~~~~ /usr/include/c++/13/istream:325:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: invalid conversion from ‘int’ to ‘void*’ [-fpermissive] 5 | cin >> 1 >> r; | ^ | | | int perechipare.cpp:5:12: error: cannot bind rvalue ‘(void*)1’ to ‘void*&’ /usr/include/c++/13/istream:224:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 224 | operator>>(long double& __f) | ^~~~~~~~ /usr/include/c++/13/istream:224:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘long double&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:220:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 220 | operator>>(double& __f) | ^~~~~~~~ /usr/include/c++/13/istream:220:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘double&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:216:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 216 | operator>>(float& __f) | ^~~~~~~~ /usr/include/c++/13/istream:216:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘float&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:201:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 201 | operator>>(unsigned long long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:201:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘long long unsigned int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:197:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 197 | operator>>(long long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:197:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘long long int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:192:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 192 | operator>>(unsigned long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:192:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘long unsigned int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:188:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 188 | operator>>(long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:188:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘long int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:184:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 184 | operator>>(unsigned int& __n) | ^~~~~~~~ /usr/include/c++/13/istream:184:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘unsigned int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:181:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]’ (near match) 181 | operator>>(int& __n); | ^~~~~~~~ /usr/include/c++/13/istream:181:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘int&’ to an rvalue of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:177:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 177 | operator>>(unsigned short& __n) | ^~~~~~~~ /usr/include/c++/13/istream:177:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘short unsigned int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:174:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]’ (near match) 174 | operator>>(short& __n); | ^~~~~~~~ /usr/include/c++/13/istream:174:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘short int&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:170:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 170 | operator>>(bool& __n) | ^~~~~~~~ /usr/include/c++/13/istream:170:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: cannot bind non-const lvalue reference of type ‘bool&’ to a value of type ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:122:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 122 | operator>>(__istream_type& (*__pf)(__istream_type&)) | ^~~~~~~~ /usr/include/c++/13/istream:122:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: invalid conversion from ‘int’ to ‘std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)’ {aka ‘std::basic_istream<char>& (*)(std::basic_istream<char>&)’} [-fpermissive] 5 | cin >> 1 >> r; | ^ | | | int /usr/include/c++/13/istream:126:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__ios_type& (*)(__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>; __ios_type = std::basic_ios<char>]’ (near match) 126 | operator>>(__ios_type& (*__pf)(__ios_type&)) | ^~~~~~~~ /usr/include/c++/13/istream:126:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: invalid conversion from ‘int’ to ‘std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)’ {aka ‘std::basic_ios<char>& (*)(std::basic_ios<char>&)’} [-fpermissive] 5 | cin >> 1 >> r; | ^ | | | int /usr/include/c++/13/istream:133:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 133 | operator>>(ios_base& (*__pf)(ios_base&)) | ^~~~~~~~ /usr/include/c++/13/istream:133:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: invalid conversion from ‘int’ to ‘std::ios_base& (*)(std::ios_base&)’ [-fpermissive] 5 | cin >> 1 >> r; | ^ | | | int /usr/include/c++/13/istream:349:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; __streambuf_type = std::basic_streambuf<char>]’ (near match) 349 | operator>>(__streambuf_type* __sb); | ^~~~~~~~ /usr/include/c++/13/istream:349:7: note: conversion of argument 1 would be ill-formed: perechipare.cpp:5:12: error: invalid conversion from ‘int’ to ‘std::basic_istream<char>::__streambuf_type*’ {aka ‘std::basic_streambuf<char>*’} [-fpermissive] 5 | cin >> 1 >> r; | ^ | | | int perechipare.cpp:5:9: note: candidate: ‘operator>>(int, int)’ (built-in) 5 | cin >> 1 >> r; | ~~~~^~~~ perechipare.cpp:5:9: note: no known conversion for argument 1 from ‘std::istream’ {aka ‘std::basic_istream<char>’} to ‘int’ In file included from /usr/include/c++/13/string:55, from /usr/include/c++/13/bits/locale_classes.h:40, from /usr/include/c++/13/bits/ios_base.h:41, from /usr/include/c++/13/ios:44, from /usr/include/c++/13/ostream:40, from /usr/include/c++/13/iostream:41: /usr/include/c++/13/bits/basic_string.tcc:827:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 827 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.tcc:827:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: mismatched types ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘int’ 5 | cin >> 1 >> r; | ^ In file included from /usr/include/c++/13/istream:1106: /usr/include/c++/13/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’ 975 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/13/bits/istream.tcc:975:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: deduced conflicting types for parameter ‘_CharT’ (‘char’ and ‘int’) 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’ 846 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:846:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: cannot convert ‘1’ (type ‘int’) to type ‘unsigned char&’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’ 851 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:851:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: cannot convert ‘1’ (type ‘int’) to type ‘signed char&’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’ 893 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) | ^~~~~~~~ /usr/include/c++/13/istream:893:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: mismatched types ‘_CharT*’ and ‘int’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’ 936 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:936:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: cannot convert ‘1’ (type ‘int’) to type ‘unsigned char*’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’ 942 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:942:5: note: template argument deduction/substitution failed: perechipare.cpp:5:12: note: cannot convert ‘1’ (type ‘int’) to type ‘signed char*’ 5 | cin >> 1 >> r; | ^ /usr/include/c++/13/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’ 1096 | operator>>(_Istream&& __is, _Tp&& __x) | ^~~~~~~~ /usr/include/c++/13/istream:1096:5: note: template argument deduction/substitution failed: /usr/include/c++/13/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_istream<char>&; _Tp = int]’: perechipare.cpp:5:12: required from here /usr/include/c++/13/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’
Cum funcționează evaluarea?
www.pbinfo.ro permite evaluarea a două tipuri de probleme:
- probleme la care rezolvarea presupune scrierea unui program complet
- probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.
Problema perechipare face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:
- Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
- Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.
Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.