CF #660 B - Captain Flint and a Long Voyage

#include<iostream>
using namespace std;
int main() {
    int i,t,x,j;
    cin >> t;
    while (t--){
        cin >> x;
        j = (x%4 != 0);
        for(int i=1;i<=x;i++){
            cout<<(( j ? (i<x-x/4):(i<=x-x/4) )?9:8);
        }
        cout << endl;
    }
    return 0;
}

https://zhuanlan.zhihu.com/p/139368825?utm_source=qq&utm_medium=social&utm_oi=1123497909743955968