Compilare: main.cpp: In function 'int main()': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0;i<v1.size();i++){ | ~^~~~~~~~~~ main.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int j=i;j<v1.size();j++){ | ~^~~~~~~~~~ main.cpp:32:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i=0;i<v2.size();i++){ | ~^~~~~~~~~~ main.cpp:43:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=0;i<sol.size();i++){ | ~^~~~~~~~~~~