POJ 3061

#include <iostream>
#include <cstring>
#include <string>
#include <algorithm>
#include <cstdio>

using namespace std;
#define maxn 100000
#define INF 0x7ffffff

int n, S, a[maxn];

void solve()
{
    int s = 0, t = 0;
    int res = INF;
    int sum = 0;
    for(;;)
    {
        while(t < n && sum < S)
            sum += a[t++];

        if(sum < S) break;
        res = min(res, t - s);
        sum -= a[s++];
    }
    if(res != INF)
        cout<<res<<endl;
    else cout<<0<<endl;
}

int main()
{
    int T;
    cin>>T;
    while(T--)
    {
        cin>>n>>S;
        for(int i=0; i<n; i++)
            scanf("%d", &a[i]);

        solve();
    }
    return 0;
}

POJ 3061

原文：http://blog.csdn.net/dojintian/article/details/45064675