#include <iostream>
using namespace std;
int a,b,c;
char ch;
int main()
{
    cin>>a>>b>>c>>ch;
    for (int i=1;i<=a;i++){
        cout<<ch;
    }
    cout<<endl;
    for (int i=1;i<=b;i++){
        cout<<ch;
    }
    cout<<endl;
    for (int i=1;i<=c;i++){
        cout<<ch;
    }
    cout<<endl;
    return 0;
}

c++

#include<bits/stdc++.h> using namespace std; int main() {int a,b,c; cin>>a>>b>>c; char n; cin>>n; for (int i=1;i<=a;i++){cout<<n;} cout<<endl; for (int i=1;i<=b;i++){cout<<n;} cout<<endl; for (int i=1;i<=c;i++){cout<<n;} }