Compilare: main.cpp: In function 'int main()': main.cpp:87:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for ( int j = 0; j < poz[i].size(); j++ ) | ~~^~~~~~~~~~~~~~~ main.cpp:95:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for ( int j = 0; j < poz[val].size(); j++ ) | ~~^~~~~~~~~~~~~~~~~ main.cpp:98:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for ( int j = 0; j < poz[i].size (); j++ ) { | ~~^~~~~~~~~~~~~~~~ main.cpp:106:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for ( int j = 0; j < poz[i].size (); j++ ) { | ~~^~~~~~~~~~~~~~~~