Compilare: main.cpp: In function 'void solve()': main.cpp:87:22: warning: narrowing conversion of 'i' from 'll' {aka 'long long int'} to 'short int' [-Wnarrowing] 87 | pq.push({i, j}); | ^ main.cpp:87:25: warning: narrowing conversion of 'j' from 'll' {aka 'long long int'} to 'short int' [-Wnarrowing] 87 | pq.push({i, j}); | ^ 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:117:26: 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] 117 | for(k = 0; k < a.size(); k++) | ~~^~~~~~~~~~