Compilare: user.cpp: In function ‘int main()’: user.cpp:11:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=p; i++) f >> V[i], s+=V[i]; g << s << '\n'; ^ user.cpp:12:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) fr[i] = V[i], tt[i] = i; ^ user.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j != p+n) ^ user.cpp:17:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ^ user.cpp:21:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ^ user.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fr[i] == 0 && j != p+n) ^ user.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == p+n) sol = i; ^