Submission #605893

#	Time	Username	Problem	Language	Result	Execution time	Memory
605893		kawaii	Secret (JOI14_secret)	C++14	30 / 100	496 ms	8428 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 = 1; i <= N; i++) a[i] = A[i - 1];
    for(int i = 1; i <= N; i++) pre[i][i] = a[i];
    for(int i = 1; i <= 9; i++){
        for(int j = 1; 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 = -1; L++; R++;
    int diff = R - L + 1;
    // cout << diff <<" ";
    for(int i = 0; i <= 9; i++){
        if((1 << i) & diff){
            if(ans == -1) ans = pre[L][L + (1 << i) - 1];
            else ans = Secret(ans, pre[L][L + (1 << i) - 1]);
            L += (1 << i);
        }
    }
    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: 30 / 100