Compilare: main.cpp: In function 'int main()': main.cpp:114:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | for(int i = 0; i<v1.size(); i++) | ~^~~~~~~~~~ main.cpp:146:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 146 | for(int i = 0; i<v2.size(); i++) | ~^~~~~~~~~~ main.cpp:178:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 178 | for(int i = 0; i<v3.size(); i++) | ~^~~~~~~~~~ main.cpp:210:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 210 | for(int i = 0; i<v4.size(); i++) | ~^~~~~~~~~~