제출 #605860

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
605860		kawaii	비밀 (JOI14_secret)	C++14	0 / 100	513 ms	8220 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 = 0;
    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;
}

컴파일 시 표준 에러 (stderr) 메시지

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]);
      |                                                                                           ~~^~~

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