oj.uz

답안 #661523

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
661523 2022-11-26T01:34:40 Z rxlfd314 비밀 (JOI14_secret) C++17
0 / 100
 455 ms 8388 KB 
#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
constexpr int mxN = 1005;
int N, A[mxN], pref[mxN][mxN];
void precompute(int l, int r) {
	if (l == r) return;
	int mid = l + r >> 1;
	pref[mid][mid] = A[mid];
	pref[mid+1][mid+1] = A[mid+1];
	for (int i = mid - 1; i >= l; i--) {
		pref[mid][i] = Secret(pref[mid][i+1], A[i]);
	}
	for (int i = mid + 2; i <= r; i++) {
		pref[mid+1][i] = Secret(pref[mid+1][i-1], A[i]);
	}
	precompute(l, mid);
	precompute(mid + 1, r);
}
void Init(int n, int* a) {
	N = n;
	for (int i = 0; i < N; i++) {
		A[i] = a[i];
	}
	precompute(0, N - 1);
}
int Query(int l, int r) {
	int lo = 0, hi = N - 1;
	while (lo < hi) {
		int mid = lo + hi >> 1;
		if (l <= mid && mid < r) {
			return Secret(pref[mid][l], pref[mid+1][r]);
		}
		if (r == mid) {
			return pref[mid][l];
		}
		if (mid < l) {
			lo = mid + 1;
		} else {
			hi = mid;
		}
	}
	return pref[lo][lo];
}

Compilation message

secret.cpp: In function 'void precompute(int, int)':
secret.cpp:8:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    8 |  int mid = l + r >> 1;
      |            ~~^~~
secret.cpp: In function 'int Query(int, int)':
secret.cpp:30:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |   int mid = lo + hi >> 1;
      |             ~~~^~~~

Subtask #1
0.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 123 ms 4376 KB Wrong Answer: Query(222, 254) - expected : 34031541, actual : 268854015.
2 Incorrect 114 ms 4348 KB Wrong Answer: Query(60, 375) - expected : 669221184, actual : 311474560.
3 Incorrect 130 ms 4316 KB Wrong Answer: Query(211, 401) - expected : 674373968, actual : 353554500.
4 Incorrect 424 ms 8252 KB Wrong Answer: Query(90, 497) - expected : 397934825, actual : 343081568.
5 Incorrect 426 ms 8136 KB Wrong Answer: Query(587, 915) - expected : 752404486, actual : 957013316.
6 Incorrect 426 ms 8388 KB Wrong Answer: Query(200, 208) - expected : 277813445, actual : 154975445.
7 Incorrect 439 ms 8148 KB Wrong Answer: Query(84, 976) - expected : 742463504, actual : 675449873.
8 Incorrect 455 ms 8116 KB Wrong Answer: Query(58, 987) - expected : 20022464, actual : 273091792.
9 Incorrect 433 ms 8100 KB Wrong Answer: Query(33, 967) - expected : 676869696, actual : 827853577.
10 Incorrect 446 ms 8196 KB Wrong Answer: Query(116, 961) - expected : 68487362, actual : 337854787.