#include <bits/stdc++.h>

using namespace std;

int a[2000];

int main(){
    ifstream cin ("INPUT.TXT");
    ofstream cout ("OUTPUT.TXT");
    int n;
    cin >>n;
    for (int i=0; i<n; i++){
        cin>>a[i];
    }
    int x=437;
    int ans=0;
    for (int i=0; i<n; i++){
        if((a[i]>x){
            cout<<"Crash "<<i+1;
            return 0;
        }
    }
    cout<<"No crash";
}