Prateek and his friends.cpp

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

typedef long long ll;

ll vet[1000010], x, sm;
int t,n,j;
bool ok;

int main(){
    scanf("%d", &t);
    while(t--){
        scanf("%d %lld", &n, &x);
        ok = false;
        j = 0;
        sm = 0LL;
        for(int i = 0; i < n; i++){
            scanf("%lld", &vet[i]);
            sm += vet[i];
            while(sm >= x and j <= i){
                if(sm == x)ok = true;
                sm -= vet[j++];
            }
        }
        if(ok)printf("YES\n");
        else printf("NO\n");
    }
    return 0;
}