Submission #605856

#	Time	Username	Problem	Language	Result	Execution time	Memory
605856		kawaii	Secret (JOI14_secret)	C++14	0 / 100	507 ms	8296 KiB

secret

#include "secret.h"
#include<bits/stdc++.h>
using namespace std;

int a[1005], pre[1005][1005];

void Init(int N, int A[]){
    for(int i = 0; i < N; i++) a[i] = A[i];
    for(int i = 0; i < N - 1; i++) pre[i][i + 1] = Secret(a[i], a[i + 1]);
    for(int i = 2; i <= 9; i++){
        for(int j = 0; j + (1 << i) - 1 < N; j++){
            pre[j][j + (1 << i) - 1] = Secret(pre[j][j + (1 << i - 1) - 1], pre[j + (1 << i - 1)][j + (1 << i) - 1]);
        }
    }
}

int Query(int L, int R){
    int ans = a[L];
    int diff = R - L + 1;
    while(diff){
        int p = (diff & -diff);
        // cout << diff <<" "<< p << "\n";
        ans = Secret(ans, pre[L][L + p - 1]);
        diff -= p; L += p;
    }
    return ans;
}

Compilation message (stderr)

secret.cpp: In function 'void Init(int, int*)':
secret.cpp:12:66: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   12 |             pre[j][j + (1 << i) - 1] = Secret(pre[j][j + (1 << i - 1) - 1], pre[j + (1 << i - 1)][j + (1 << i) - 1]);
      |                                                                ~~^~~
secret.cpp:12:93: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   12 |             pre[j][j + (1 << i) - 1] = Secret(pre[j][j + (1 << i - 1) - 1], pre[j + (1 << i - 1)][j + (1 << i) - 1]);
      |                                                                                           ~~^~~

• Subtask 1: 0 / 100