Compilare: main.cpp: In function 'int main()': main.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i=0;i<v[pa.second].size();i++) | ~^~~~~~~~~~~~~~~~~~~~ main.cpp:55:18: warning: statement has no effect [-Wunused-value] 55 | f[ca.second]%104659; | ~~~~~~~~~~~~^~~~~~~