Submission #1070616

#	Time	Username	Problem	Language	Result	Execution time	Memory
1070616		AdamGS	Sum Zero (RMI20_sumzero)	C++17	0 / 100	3 ms	2648 KiB

sumzero

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=4e5+7, K=50;
pair<ll,int>T[LIM];
int nxt[LIM][3];
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n;
	cin >> n;
	rep(i, n) {
		cin >> T[i+1].st;
		T[i+1].st+=T[i].st;
		T[i+1].nd=i+1;
	}
	stable_sort(T, T+n+1);
	rep(i, n+2) nxt[i][0]=n+1;
	for(int i=1; i<n; ++i) if(T[i].st==T[i-1].st) {
		nxt[T[i-1].nd][0]=T[i].nd;
	}
	for(int i=n; i>=0; --i) nxt[i][0]=min(nxt[i][0], nxt[i+1][0]);
	rep(k, 2) {
		rep(i, n+2) {
			int p=i;
			rep(j, K) p=nxt[p][k];
			nxt[i][k+1]=p;
		}
	}
	int q;
	cin >> q;
	while(q--) {
		int l, r, ans=0;
		cin >> l >> r; --l;
		while(nxt[l][2]<=r) {
			l=nxt[l][2];
			ans+=K*K;
		}
		while(nxt[l][1]<=r) {
			l=nxt[l][1];
			ans+=K;
		}
		while(nxt[l][0]<=r) {
			l=nxt[l][0];
			ans+=1;
		}
		cout << ans << '\n';
	}
}

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