不知道什么原因tle了，把long long和解绑都开了

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

signed main() {
    ios::sync_with_stdio(0),cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int> a(n + 1, 0);
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        a[i] += a[i - 1];
    }
    int l, r;
    for (int i = 0; i < m; ++i) {
        cin >> l >> r;
        cout << a[r] - a[l - 1] << '\n';
    }
    return 0;
}

最感觉不如C语言的一集

#include <iostream>
#define MAX 1000001
using namespace std;

int p[MAX];

int main(){
	std::ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int n,c,a;
	cin >> n >> c;
	for(int i=1;i<=n;i++){
		cin >> a;	
		p[i]=p[i-1]+a;
	}
	
	int l,r;
	for(int i=1;i<=c;i++){
		cin >> l >> r;
		cout << p[r]-p[l-1] << '\n';
	}
	return 0;
}

#include<stdio.h>
int main(){
    int n,m,i,a,b[1000001];
    scanf("%d%d",&n,&m);
    for(i=1;i<=n;i++){
        scanf("%d",&a);
        b[i]=b[i-1]+a;
    }
    while(m--){
        int l,r;
        scanf("%d%d",&l,&r);
        printf("%d\n",b[r]-b[l-1]);
    }
}