Submission #1166586

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166586		Nxmkxing	Aliens (IOI16_aliens)	C++20	0 / 100	0 ms	328 KiB

aliens

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

using ll = long long;
using pll = pair<long long, long long>;
const ll inf = 1e18;

const int N = 1e5 + 10;
const int M = 1e6 + 10;
ll n, f[N], mx, minR[M], bestR[M], mxC[M], bestC[M], x[N], y[N], dp[N];
vector<pll> v, v2, a;

ll take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
    for (int i = 0; i < n; i++) if (r[i] > c[i]) swap(r[i], c[i]);
    for (int i = 0; i < n; i++) v.push_back({r[i], c[i]});
    sort(v.begin(), v.end());
    for (int i = 0; i < n; i++) {
        if (i == n - 1 || v[i].first != v[i+1].first) {
            v2.push_back(v[i]);
        }
    }
    n = 0;
    mx = -1;
    for (int i = 0; i < v2.size(); i++) {
        if (v2[i].second <= mx) continue;
        x[++n] = v2[i].first;
        y[n] = v2[i].second;
        mx = v2[i].second;
    }
    ::n = n;
    //cout << "\n" << n << "\n"; for (int i = 1; i <= n; i++) cout << x[i] << " " << y[i] << "\n";

    // solve
    for (int i = 1; i <= n; i++) dp[i] = inf;
    for (int i = 1; i <= n; i++) for (int j = 1; j <= i; j++) dp[i] = min(dp[i], dp[j-1] + (y[i] - x[j] + 1) * (y[i] - x[j] + 1));
    //for (int i = 1; i <= n; i++) cout << dp[i] << " ";
    return dp[n];
}

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