View Code of Problem 442

#include<iostream>
#include<string>
using namespace std;
int main(){
	int T;
	cin>>T;
	while(T--){
		int p;
		cin>>p;
		long long x=0,k=0,d=0;
		while(true){
		if(x==p){
			break;
		}
		k++;
		if(k%7==0){
			if(k==d+1){
				x++;
				d=k;
				//cout<<k<<' '<<x<<endl;
			}
			else{
				x=1;
				d=k;
			}
		}
		else{
			string s =to_string(k);
			for(int i=0;i<s.size();i++){
				if(s[i]=='7'){
					if(k==d+1){
						x++;
						d=k;
						//cout<<d<<' '<<k<<' '<<x<<endl;
					}
					else{
						x=1;
						d=k;
					}
					break;
				}
			}
		}
	}
	cout<<k-p+1<<endl;
}
}