Submission #555551

#	Time	Username	Problem	Language	Result	Execution time	Memory
555551		snasibov05	Aliens (IOI16_aliens)	C++14	4 / 100	1 ms	212 KiB

aliens

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

using namespace std;

long long solve1(int n, int m, int k, vector<int> r, vector<int> c){
    vector<vector<bool>> grid(m, vector<bool>(m));
    for (int i = 0; i < n; ++i){
        for (int j = min(r[i], c[i]); j <= max(r[i], c[i]); ++j){
            for (int l = min(r[i], c[i]); l <= max(r[i], c[i]); ++l) grid[j][l] = true;
        }
    }

    int ans = 0;
    for (int i = 0; i < m; ++i){
        for (int j = 0; j < m; ++j){
            if (grid[i][j]) ans++;
        }
    }

    return ans;
}

long long solve2(int n, int m, int k, vector<int> r, vector<int> c){

    sort(r.begin(), r.end());
    vector< vector<int> > dp(n+1, vector<int>(k+1, m * m));
    dp[0][0] = 0;
    for (int i = 1; i <= n; ++i){
        for (int j = 1; j <= i; ++j){
            dp[i][j] = min(dp[i][j], dp[i][j-1]);
            for (int l = 0; l < i; ++l){
                dp[i][j] = min(dp[i][j], dp[l][j-1] + (r[i-1] - r[l] + 1) * (r[i-1] - r[l] + 1));
            }

        }
    }

    return dp[n][k];

}

long long take_photos(int n, int m, int k, vector<int> r, vector<int> c) {

    if (n <= 50) return solve1(n, m, k, r, c);
    else return solve2(n, m, k, r, c);

}

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