Lucky prefixes

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vi;
#define til(n) for(ll i = 0; i < n; i++)


int main() {
    ll n, q;
    cin >> n >> q;
    vi v(n);
    til(n) {
        ll v1;
        cin >> v1;
        v[i] = v1;
    }
    while (q--) {
        ll type;
        cin >> type;
        if (type == 1) {
            ll i, x;
            cin >> i >> x;
            i--;
            v[i]=x;
        } else {
            ll a, b;
            cin >> a >> b;
            a--;b--;
            ll sum = 0;
            for (ll i = a; i <= b; i++) {
                sum += v[i];
                if (sum < 0) {
                    cout << "NO\n";
                    break;
                }
            }
            if (sum >= 0) {
                cout << "YES\n";
            }
        }
    }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED