Compilare: main.cpp: In function 'void solve()': main.cpp:77:33: warning: narrowing conversion of 'i' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 77 | pq.insert({v[i][j], i, j}); | ^ main.cpp:77:36: warning: narrowing conversion of 'j' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 77 | pq.insert({v[i][j], i, j}); | ^ main.cpp:97:26: 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] 97 | for(k = 0; k < a.size(); k++) | ~~^~~~~~~~~~ main.cpp:107:26: 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] 107 | for(k = 0; k < a.size(); k++) | ~~^~~~~~~~~~ main.cpp:26:11: warning: narrowing conversion of 'first' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 26 | #define x first | ^~~~~ main.cpp:113:42: note: in expansion of macro 'x' 113 | if(pq.find({v[x][y], x, y}) != pq.end()) | ^ main.cpp:27:11: warning: narrowing conversion of 'second' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 27 | #define y second | ^~~~~~ main.cpp:113:45: note: in expansion of macro 'y' 113 | if(pq.find({v[x][y], x, y}) != pq.end()) | ^ main.cpp:26:11: warning: narrowing conversion of 'first' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 26 | #define x first | ^~~~~ main.cpp:114:52: note: in expansion of macro 'x' 114 | pq.erase(pq.find({v[x][y], x, y})); | ^ main.cpp:27:11: warning: narrowing conversion of 'second' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 27 | #define y second | ^~~~~~ main.cpp:114:55: note: in expansion of macro 'y' 114 | pq.erase(pq.find({v[x][y], x, y})); | ^