#233 Автобусная экскурсия

#include <iostream>
#include <fstream>
#include <cmath>
#include <vector>
#include <algorithm>
#include <cstdio>
#include <math.h>
#include <string>
#include <stdio.h>
#include <string.h>
#include <string>
#include <stdlib.h>
#include <cmath>
#include <iomanip>
#include <queue>
#include <utility>
#include <vector>
#include <stack>
#include <list>
#include <iterator>
#include <cctype>
#include <exception>
#include <cstdlib>
#include <stdexcept>
#include <csignal>
#include <pthread.h>

using namespace std;

int main(int argc, const char * argv[]) {

    int height;
    int bridge[10000];
    int countCrash;
    countCrash=0;
    cin>>height;
    for(int i=1; i<=height;i++){
        cin>>bridge[i];
    }

    for (int i=1; i<=height; i++) {
        if (bridge[i]<=437){
            countCrash++;
            cout<<"Crash"<<" "<<i<<endl;
            return 0;
        }
    }

    if(countCrash == 0){
        cout<<"No crash"<<endl;
    }

        return 0;
    }