Compilare: main.cpp: In function 'double prim(int)': main.cpp:145:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 145 | for(int f = 1 ; f < mm.size() ; f ++) | ~~^~~~~~~~~~~ main.cpp:161:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 161 | for(int f = 0 ; f < mm.size() ; f ++) | ~~^~~~~~~~~~~