Submission #119330

#	Time	Username	Problem	Language	Result	Execution time	Memory
119330		minhtung0404	Treasure (different grader from official contest) (CEOI13_treasure2)	C++17	100 / 100	2 ms	512 KiB

treasure

//https://oj.uz/problem/view/CEOI13_treasure2

#include<bits/stdc++.h>
#include "treasure.h"
const int N = 105;
using namespace std;

int n, sum[N][N];

int ask(int r1, int c1, int r2, int c2){
    if (r1 > r2) swap(r1, r2);
    if (c1 > c2) swap(c1, c2);
    return countTreasure(r1, c1, r2, c2);
}

void findTreasure(int n){
    int half = n / 2;
    for (int i = half+1; i <= n; i++) for (int j = half+1; j <= n; j++) sum[i][j] = ask(1, 1, i, j);
    for (int i = half+1; i <= n; i++) for (int j = 1; j <= half; j++) sum[i][j] = sum[i][n] - ask(i, j+1, 1, n);
    for (int i = 1; i <= half; i++) for (int j = half+1; j <= n; j++) sum[i][j] = sum[n][j] - ask(i+1, j, n, 1);
    for (int i = 1; i <= half; i++) for (int j = 1; j <= half; j++) sum[i][j] = sum[i][n] + sum[n][j] - sum[n][n] + ask(i+1, j+1, n, n);
    for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) if (sum[i][j] - sum[i-1][j] - sum[i][j-1] + sum[i-1][j-1]) Report(i, j);
//    cout << (cnt <= 7 * n * n * n * n / 16 + n * n);
}

• Subtask 1: 100 / 100