Compilare: main.cpp: In function 'int main()': main.cpp:163:17: 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<v[pa.second].size();i++) | ~^~~~~~~~~~~~~~~~~~~~ main.cpp:130:21: warning: unused variable 'l' [-Wunused-variable] 130 | int n,m,k,a,b,c,l=0,minn=-2100000000,mc=0; | ^ main.cpp:130:25: warning: unused variable 'minn' [-Wunused-variable] 130 | int n,m,k,a,b,c,l=0,minn=-2100000000,mc=0; | ^~~~ main.cpp:130:42: warning: unused variable 'mc' [-Wunused-variable] 130 | int n,m,k,a,b,c,l=0,minn=-2100000000,mc=0; | ^~