Submission #1124756

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124756		codexistent	Treasure (different grader from official contest) (CEOI13_treasure2)	C++20	0 / 100	1 ms	328 KiB

treasure

#include "treasure.h"
#define ll long long
#define FOR(i, a, b) for(ll i = a; i <= b; i++)
#define MAXN 105

ll pfx[MAXN][MAXN], m;

void findTreasure (int N) {
    m = N / 2;
    FOR(i, 0, N) FOR(j, 0, N) pfx[i][j] = 0;

    FOR(i, m + 1, N) FOR(j, m + 1, N) pfx[i][j] = countTreasure(1, 1, i, j);
    FOR(i, m + 1, N) FOR(j, 1, m) pfx[i][j] = pfx[i][N] - countTreasure(1, j + 1, i, N);
    FOR(i, 1, m) FOR(j, m + 1, N) pfx[i][j] = pfx[N][j] - countTreasure(i + 1, 1, N, j);
    FOR(i, 1, m) FOR(j, 1, m) pfx[i][j] = pfx[N][j] + pfx[i][N] - pfx[N][N] + countTreasure(i + 1, j + 1, N, N);

    FOR(i, 1, N){
        FOR(j, 1, N){
            if(pfx[i][j] - pfx[i - 1][j] - pfx[i][j - 1] + pfx[i - 1][j - 1]){
                Report (i, j);
            }
        }
    }
}

• Subtask 1: 0 / 100