Submission #1166931

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166931		Irate	Sum Zero (RMI20_sumzero)	C++20	22 / 100	1096 ms	2240 KiB

sumzero

#include<bits/stdc++.h>
using namespace std;
const int mxN = 5005;
struct T{
    int l, r;
    bool operator<(T &other){
        return r < other.r;
    }
};
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int>v(n + 1);
    vector<long long>pref(n + 1);
    vector<T>I;
    for(int i = 1;i <= n;++i){
        cin >> v[i];
        pref[i] = pref[i - 1] + v[i];
    }
    for(int i = 1;i <= n;++i){
        for(int j = i;j <= n;++j){
            if(pref[j] - pref[i - 1] == 0){
                I.push_back({i, j});
                break;
            }
        }
    }
    sort(I.begin(), I.end());
    int q;
    cin >> q;
    while(q--){
        int l, r;
        cin >> l >> r;
        vector<T>temp;
        for(auto t : I){
            if(l <= t.l && t.r <= r){
                temp.push_back(t);
            }
        }
        int mx = 0, last = -1;
        if(!temp.empty()){
            mx = 1;
            last = 0;
            for(int i = 1;i < (int)temp.size();++i){
                if(temp[last].r < temp[i].l){
                    mx++;
                    last = i;
                }
            }
        }
        cout << mx << '\n';
    }
}

• Subtask 1: 22 / 22
• Subtask 2: 0 / 39
• Subtask 3: 0 / 39