Compilare: main.cpp: In function 'void solve(long long int, long long int)': main.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<elem>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<p.size();i++) | ~^~~~~~~~~ main.cpp:41:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<elem>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int j=i+1;j<p.size();j++) | ~^~~~~~~~~ main.cpp:28:19: warning: unused variable 'i' [-Wunused-variable] 28 | long long mij,x,i,j; | ^ main.cpp:28:21: warning: unused variable 'j' [-Wunused-variable] 28 | long long mij,x,i,j; | ^