还有个问题，我的代码在我的电脑上跑出来是错的，在我舍友电脑上跑出来就是对的

#include <iostream>
#include <algorithm>
#include <cstring>

using namespace std;
const int N = 1000010;

int n, m; //天数和订单数量
long long int a[N], b[N]; //可用于租借的教室数量, 差分数组
long long int d[N], s[N], t[N]; // 租借数量， 开始， 结束
bool judge = true;
        long long int tmp = 0;


int main()
{
    cin >> n >> m;
    for(int i = 1; i <= n; i ++)    cin >> a[i];
    for(int i = 1; i <= m; i ++)    cin >> d[i] >> s[i] >> t[i];
    int l = 0, r = m;
    while(l < r)
    {
        memset(b, 0, sizeof b);
        int mid = l + r >> 1;

        for(int i = 1; i <= mid; i ++)
        {
            b[s[i]] += d[i];
            b[t[i] + 1] -= d[i];
        }

        long long int sum = 0;
        judge = true;
        for(int i = 1; i <= n; i ++)
        {
            sum += b[i];
            //cout << "sum:" << sum << endl;
            if(sum > a[i])  judge = false;
        }
        //cout << l << " " << r << endl;
        if(!judge)   r = mid;
        else l = mid + 1;
    }

    memset(b, 0, sizeof b);
    for(int i = 1; i <= r; i ++)
    {
        b[s[i]] += d[i];
        b[t[i] + 1] -= d[i];
    }
    int sum = 0;
    judge = true;
    for(int i = 1; i <= n; i ++)
    {
        sum += b[i];
        if(sum > a[i])  judge = false;
    }
    //cout << "r:" << r << endl;
    if(judge)  cout << "0";
    else cout << "-1" << endl << r;
}