Compilare: main.cpp: In function 'int main()': main.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<c[v[i]].size();++j) ~^~~~~~~~~~~~~~~ main.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<c[v[i]].size();++j) ~^~~~~~~~~~~~~~~ main.cpp:13:17: warning: unused variable 't' [-Wunused-variable] long long n,t,i,j=1,s=1,k=0,m; ^ main.cpp:13:25: warning: unused variable 's' [-Wunused-variable] long long n,t,i,j=1,s=1,k=0,m; ^ main.cpp:13:33: warning: unused variable 'm' [-Wunused-variable] long long n,t,i,j=1,s=1,k=0,m; ^