Submission #703803

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
703803	2023-02-28T12:18:19 Z	TS_2392	Secret (JOI14_secret)	C++14	Compilation error	0 ms	0 KB

secret

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

const int NN = 1002;
int n, a[NN], calc[NN][NN];
int Secret(int x, int y){
    return x + (y / 2) * 2;
}
void dnc(int L, int R){
    if(L + 1 >= R) return;
    int mid = L + R >> 1;
    calc[mid][mid] = a[mid], calc[mid + 1][mid + 1] = a[mid + 1];
    for(int i = mid - 1; i >= L; --i) calc[i][mid] = Secret(a[i], calc[i + 1][mid]);
    for(int i = mid + 2; i <= R; ++i) calc[mid + 1][i] = Secret(calc[mid + 1][i - 1], a[i]);
    dnc(L, mid); dnc(mid + 1, R);
}
void Init(int N, int[] A){
    n = N;
    for(int i = 1; i <= n; ++i) a[i] = A[i - 1];
    memset(calc, 255, sizeof(calc)); dnc(1, n);
}
int Query(int L, int R){
    ++L; ++R;
    if(L == R) return a[L];
    if(L + 1 == R) return Secret(a[L], a[R]);
    int i;
    for(i = L; i < R; ++i) if(calc[L][i] != -1 && calc[i + 1][R] != -1) break;
    return Secret(calc[L][i], calc[i + 1][R]);
}

Compilation message

secret.cpp: In function 'void dnc(int, int)':
secret.cpp:12:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   12 |     int mid = L + R >> 1;
      |               ~~^~~
secret.cpp: At global scope:
secret.cpp:18:24: error: expected ',' or '...' before 'A'
   18 | void Init(int N, int[] A){
      |                        ^
secret.cpp: In function 'void Init(int, int*)':
secret.cpp:20:40: error: 'A' was not declared in this scope
   20 |     for(int i = 1; i <= n; ++i) a[i] = A[i - 1];
      |                                        ^