Submission #595027

#	Time	Username	Problem	Language	Result	Execution time	Memory
595027		Valaki2	Aliens (IOI16_aliens)	C++14	12 / 100	327 ms	4264 KiB

aliens

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

#define n N
#define m M
#define k K

#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

const int inf = 1e9 + 42;

int n, m, k;
vector<int> a, b;

int solve() {
    vector<bool> v(1 + m, false);
    v[0] = true;
    for(int i = 0; i < n; i++) {
        v[a[i] + 1] = true;
    }
    vector<int> prv(1 + m, 0);
    for(int i = 1; i <= m; i++) {
        if(v[i]) {
            prv[i] = i;
        } else {
            prv[i] = prv[i - 1];
        }
    }
    vector<vector<int> > dp(1 + m, vector<int> (1 + k, inf));
    dp[0][0] = 0;
    for(int j = 1; j <= k; j++) {
        dp[0][j] = 0;
        for(int i = 1; i <= m; i++) {
            dp[i][j] = dp[i][j - 1];
            for(int l = 0; l <= i; l++) {
                dp[i][j] = min(dp[i][j], dp[prv[l]][j - 1] + (i - l) * (i - l));
            }
            dp[i][j] = min(dp[i][j], dp[prv[i]][j]);
        }
    }
    int ans = inf;
    for(int j = 0; j <= k; j++) {
        ans = min(ans, dp[m][j]);
    }
    return ans;
}

#undef n
#undef m
#undef k
int take_photos(signed n, signed m, signed k, vector<signed> r, vector<signed> c) {
    N = n;
    M = m;
    K = k;
    a.assign(N, 0);
    b.assign(N, 0);
    for(int i = 0; i < N; i++) {
        a[i] = r[i];
        b[i] = c[i];
    }
    return solve();
}

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