Submission #1224688

#	Time	Username	Problem	Language	Result	Execution time	Memory
1224688		madamadam3	Aliens (IOI16_aliens)	C++20	0 / 100	0 ms	328 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
using vi = vector<int>;
using vvi = vector<vi>;

int n, m, k;
vi r, c;

inline bool below(int i) {
    return r[i] >= c[i];
}

ll take_photos(int N, int M, int K, vi R, vi C) {
    n = N; m = M; k = K; r = R; c = C;
    vvi used(m, vi(m, 0));
    vi g(n, 0); for (int i = 0; i < n; i++) g[i] = abs(r[i]-c[i])+1;

    for (int i = 0; i < n; i++) {
        bool lo = below(i);
        for (int x = c[i]; lo ? x < c[i] + g[i] : x > c[i] - g[i]; lo ? x++ : x--) {
            for (int y = r[i]; lo ? y < r[i] + g[i] : y > r[i] - g[i]; lo ? y++ : y--) {
                used[x][y]++;
            }
        }
    }

    ll ans = 0;
    for (int x = 0; x < m; x++) {
        for (int y = 0; y < m; y++) {
            if (used[x][y]) ans++;
        }
    }
    return ans;
}

Compilation message (stderr)

aliens.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
aliens_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40