Compilare: user.cpp: In function ‘int main()’: user.cpp:14:9: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f>>t+1; ^ user.cpp:20:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f>>s+1; ^ user.cpp:54:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++){ ^