Compilare: main.cpp: In function 'void solve()': main.cpp:86:29: warning: narrowing conversion of 'i' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 86 | pq.pb({v[i][j], i, j}); | ^ main.cpp:86:32: warning: narrowing conversion of 'j' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 86 | pq.pb({v[i][j], i, j}); | ^ main.cpp:90:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<lol>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(int it = 0; it < pq.size(); it++) | ~~~^~~~~~~~~~~ main.cpp:106:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for(k = 0; k < a.size(); k++) | ~~^~~~~~~~~~ main.cpp:116:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 116 | for(k = 0; k < a.size(); k++) | ~~^~~~~~~~~~