Submission #1054987

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054987		pokmui9909	Sum Zero (RMI20_sumzero)	C++17	0 / 100	6 ms	33372 KiB

sumzero

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define x first
#define y second
int N, Q, F[20][400005];
pair<ll, int> B[400005];

int main(){
    cin.tie(0) -> sync_with_stdio(0);

    cin >> N;
    fill(F[0], F[19] + N + 3, N + 2);
    for(int i = 1; i <= N; i++){
        int v; cin >> v;
        B[i] = {B[i - 1].x + v, i};
    }
    sort(B, B + N + 1);
    for(int i = 1; i <= N; i++){
        if(B[i - 1].x == B[i].x){
            F[0][B[i - 1].y + 1] = B[i].y + 1;
        }
    }
    for(int i = N; i >= 1; i--){
        F[0][i] = min(F[0][i], F[0][i + 1]);
    }
    for(int j = 1; j < 20; j++){
        for(int i = 1; i <= N; i++){
            F[j][i] = F[j - 1][F[j - 1][i]];
        }
    }
    cin >> Q;
    while(Q--){
        int L, R; cin >> L >> R;
        int t = 0, u = L;
        for(int j = 19; j >= 0; j--){
            if(F[j][u] > R + 1 || F[j][u] == 0) continue;
            u = F[j][u], t |= (1 << j);
        }
        cout << t << '\n';
    }
}

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