Submission #1986796

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Source Code Expand

#include <iostream>
#include <math.h>
#include <algorithm>
#include <functional>
#include <vector>
#include <typeinfo>
#include <climits>
#include <ctype.h>
#include <string>
#include <stack>
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define REP(i, n) for(int i = 0; i < n; i++)
struct omt{omt(){ios::sync_with_stdio(false);cin.tie(0);}}star;

int main(){
    string s;
    cin >> s;
    int A[26] = {};

    int f = 0;
    REP(i, s.size()){
        int c = s[i] - 97;
        A[c]++;
        if(A[c] > 1){
            f = 1;
            break; 
        }
    }

    if(f == 0) cout << "yes" << endl;
    else cout << "no" << endl;

    return 0;
}

Submission Info

Judge Result