Compilare: main.cpp: In function 'void solve(int)': main.cpp:163:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 163 | for(int i=0; i<c[cp].size(); i++) | ~^~~~~~~~~~~~~ main.cpp:180:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 180 | for(int j=0; j<c[cp].size(); j++) | ~^~~~~~~~~~~~~