oj.uz

Submission #403276

# Submission time Handle Problem Language Result Execution time Memory
403276 2021-05-13T01:26:02 Z thomas_li Secret (JOI14_secret) C++17
0 / 100
 561 ms 4500 KB 
#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;
const int MM = 1e6+5;
int n,a[MM],pre[21][MM],mask[MM];

void rec(int l, int r, int d){
	if(l == r) return;
	int mid = (l+r)/2;
	pre[d][mid] = a[mid];
	for(int i = mid-1; i >= l; i--) pre[d][i] = Secret(a[i],pre[d][i+1]);
	pre[d][mid+1] = a[mid+1];
	for(int i = mid+2; i <= r; i++) pre[d][i] = Secret(a[i],pre[d][i-1]);
	for(int i = mid+1; i <= r; i++) mask[i] ^= (1<<d);
	rec(l,mid,d+1); rec(mid+1,r,d+1);
}

void Init(int N, int A[]){
	n = N;
	for(int i = 0; i < n; i++) a[i] = A[i];
	rec(0,n-1,0);
}

int Query(int L, int R){
	if(L == R) return a[L];
	int d = __builtin_ctz(mask[L]^mask[R]);
	return Secret(pre[d][L],pre[d][R]);
}

/*
int main(){
	cin.tie(0)->sync_with_stdio(0);
	int A[] = {1,4,7,2,5,8,3,6};
	Init(8,A);
	cout << Query(0,3) << "\n";
	cout << Query(1,7) << "\n";
	cout << Query(5,5) << "\n";
	cout << Query(2,4) << "\n";
}*/

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 139 ms 2372 KB Wrong Answer: Query(222, 254) - expected : 34031541, actual : 809782271.
2 Incorrect 136 ms 2392 KB Wrong Answer: Query(60, 375) - expected : 669221184, actual : 68749376.
3 Incorrect 160 ms 2408 KB Wrong Answer: Query(211, 401) - expected : 674373968, actual : 136349820.
4 Incorrect 522 ms 4352 KB Wrong Answer: Query(90, 497) - expected : 397934825, actual : 650789536.
5 Incorrect 552 ms 4388 KB Wrong Answer: Query(587, 915) - expected : 752404486, actual : 377506838.
6 Incorrect 513 ms 4416 KB Wrong Answer: Query(738, 741) - expected : 983692994, actual : 61461050.
7 Incorrect 521 ms 4500 KB Wrong Answer: Query(84, 976) - expected : 742463504, actual : 687550570.
8 Incorrect 561 ms 4480 KB Wrong Answer: Query(58, 987) - expected : 20022464, actual : 145923264.
9 Incorrect 517 ms 4332 KB Wrong Answer: Query(33, 967) - expected : 676869696, actual : 18757135.
10 Incorrect 515 ms 4420 KB Wrong Answer: Query(116, 961) - expected : 68487362, actual : 70590726.