Submission #1756243

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Source Code Expand

#include<iostream>
#include<iomanip>
#include<math.h>
#include<cstdlib>
#include<algorithm>
#include<cstring>
#include<set>
#include<vector>
using namespace std;

#define INF 1<<21
#define MOD 10e9+7

int t[100005];

int main(){
    int n,k;
    int s;
    cin>>n>>k;
    for(int i=1;i<=n;i++){
        cin>>t[i];
    }
    for(int i=3;i<=n;i++){
        s=0;
        s+=t[i-2]+t[i-1]+t[i];
        if(s<k){
            cout<<i<<endl;
            return 0;
        }
    }
    cout<<-1<<endl;
    return 0;
}

Submission Info

Judge Result