Submission

Score: 30

User: KurtCobain

Problemset: J.Nine Khanaphat

Language: cpp

Time: 1.096 second

Submitted On: 2025-10-15 13:39:20

#include<bits/stdc++.h>
using namespace std;

int main(){
    long long a,b;
    cin >> a >> b;
    long long total=0;
    for (int i=a;i<=b;i++){
        string s = to_string(i);
        for (char c : s){
            if (c == '9'){
             total+=1;
            }
        }
    }
    cout << total;
}