Compilare: user.cpp: In function ‘int main()’: user.cpp:3:128: warning: unused variable ‘i’ [-Wunused-variable] using namespace std;ifstream f("restante.in");ofstream g("restante.out");string c[36003];map<string,int>M;int main(){int n,a=0,i;f>>n;FOR(i,1,n){f>>c[i];sort(c[i].begin(),c[i].end());}FOR(i,1,n)M[c[i]]++;FOR(i,1,n)if(M[c[i]]==1)a++;g<<a;return 0;} ^