Submission #1224692

#	Time	Username	Problem	Language	Result	Execution time	Memory
1224692		madamadam3	Aliens (IOI16_aliens)	C++20	4 / 100	1 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);
        int lx = min(r[i], c[i]);
        int rx = max(r[i], c[i]);
        int ly = lx;
        int ry = rx;

        // cout << "i: " << i << " (lx, ly): (" << lx << ", " << ly << ") (rx, ry): (" << rx << ", " << ry << ")\n"; 

        for (int x = lx; x <= rx; x++) {
            for (int y = ly; y <= ry; 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: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40