Compilare: main.cpp: In function 'long long int brute2(int)': main.cpp:47:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i=0; i<poz[x].size(); i++){ | ~^~~~~~~~~~~~~~ main.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int j=i; j<poz[x].size(); j++){ | ~^~~~~~~~~~~~~~ main.cpp:56:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | int after = (j < poz[x].size()-1 ? poz[x][j+1] - poz[x][j] - 1 : n - poz[x][j]); | ~~^~~~~~~~~~~~~~~~~