oj.uz

Submission #784415

# Submission time Handle Problem Language Result Execution time Memory
784415 2023-07-16T06:07:57 Z chanhchuong123 Secret (JOI14_secret) C++14
0 / 100
 410 ms 4304 KB 
#include "secret.h"
#include <bits/stdc++.h>
using namespace std;

const int MAX = 1024;
int n;
int a[MAX];
int mask[MAX];
int dp[15][MAX];

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

void Init(int N, int A[]) {
    n = N; assert(n <= 1000);
    for (int i = 0; i < n; ++i) {
        a[i] = A[i];
      	mask[i] = 0;
    }
    divide(0, n - 1, 0);
}

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

Compilation message

secret.cpp: In function 'void divide(int, int, int)':
secret.cpp:13:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   13 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 104 ms 2408 KB Wrong Answer: Query(222, 254) - expected : 34031541, actual : 268854015.
2 Incorrect 104 ms 2356 KB Wrong Answer: Query(60, 375) - expected : 669221184, actual : 311474560.
3 Incorrect 102 ms 2424 KB Wrong Answer: Query(211, 401) - expected : 674373968, actual : 353554500.
4 Incorrect 395 ms 4300 KB Wrong Answer: Query(90, 497) - expected : 397934825, actual : 343081568.
5 Incorrect 385 ms 4288 KB Wrong Answer: Query(587, 915) - expected : 752404486, actual : 957013316.
6 Incorrect 376 ms 4288 KB Wrong Answer: Query(200, 208) - expected : 277813445, actual : 154975445.
7 Incorrect 378 ms 4304 KB Wrong Answer: Query(84, 976) - expected : 742463504, actual : 675449873.
8 Incorrect 383 ms 4264 KB Wrong Answer: Query(58, 987) - expected : 20022464, actual : 273091792.
9 Incorrect 385 ms 4208 KB Wrong Answer: Query(33, 967) - expected : 676869696, actual : 827853577.
10 Incorrect 410 ms 4220 KB Wrong Answer: Query(116, 961) - expected : 68487362, actual : 337854787.