Compilare: main.cpp: In function 'void solvedp(int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i=1;i<=ev.size();i++) | ~^~~~~~~~~~~ main.cpp:51:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int j=0;j<=ev.size()/2;j++) | ~^~~~~~~~~~~~~ main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int j=0;j<=ev.size()/2;j++) | ~^~~~~~~~~~~~~