Submission #978992

#	Time	Username	Problem	Language	Result	Execution time	Memory
978992		NintsiChkhaidze	Sum Zero (RMI20_sumzero)	C++17	61 / 100	625 ms	25624 KiB

sumzero

#include <bits/stdc++.h>
#define ll long long
#define s second
#define f first
#define pb push_back
#define pii pair <int,int>
#define left (h<<1),l,(l + r)/2
#define right ((h<<1)|1),(l + r)/2 + 1,r
using namespace std;
 
const int N = 4e5 + 3;

unordered_map <int,int> last;
int dp[N],l[N],r[N],p[N];
int to[N],ans[N],cur[N];

signed main(){
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
 
	int n;
	cin>>n;
 
	for(int i=1;i<=n;i++){
		cin>>p[i];
	}
 
	for (int i = n; i >= 1; i--){
		p[i] += p[i + 1];
		last[p[i]] = 1e9;
	}

	last[0] = n + 1;
	int k = 1e9;
	
	for (int i = n; i >= 1; i--){
		k = min(k,last[p[i]]);
		to[i] = k;
		last[p[i]] = i;
	}
	to[n+1] = 1e9;
	
	int q;
	cin>>q;
	
	for (int i = 1; i <= q; i++){
		cin >> l[i] >> r[i];
	}

	for (int i = 18; i >= 0; i--){
		for (int j = 1; j <= n+1; j++)
			cur[j] = to[j];

		for (int j = 1; j <= i; j++){
			for (int k = 1; k <= n; k++){
				if (cur[k] >= 1e9) cur[k] = 1e9; 
				else cur[k] = cur[cur[k]];
			}
		}

		for (int j = 1; j <= q; j++){
			if (cur[l[j]] <= r[j] + 1){
				l[j] = cur[l[j]];
				ans[j] += (1<<i);
			}
		}
	}
 
	for (int i=1;i<=q;i++)
		cout<<ans[i]<<endl;
}

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