Compilare: main.cpp: In function 'long long int f(std::vector<long long int>, long long int)': main.cpp:17:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0; i<v.size(); i++) | ~^~~~~~~~~ main.cpp: In function 'long long int solve(std::vector<long long int>)': main.cpp:25:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=1,minn; i<v.size(); i++) { | ~^~~~~~~~~