Compilare: main.cpp: In function 'int main()': main.cpp:88:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | while(i < it->second.size() and ceva <= ans){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:96:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(i = 0; i < brut.size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:97:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for(j = i + 1; j < brut.size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:26:15: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] 26 | if(f[i]) | ~~~^ main.cpp:25:18: note: within this loop 25 | for(i = 1; i <= 1000000; i++) | ~~^~~~~~~~~~