Submission #435845

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
435845	2021-06-23 19:26:55	Hegdahl	Aliens (IOI16_aliens)	C++17	25 / 100	2067 ms	6988 KiB

aliens

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#include <bits/stdc++.h>
#include "aliens.h"
#define ar array
using namespace std;
using ll = long long;
int n, m, k;
vector<ar<ll, 2>> a;
const ll INF = 1LL<<60;
ll sq(ll a) { return a*a; }
void minset(ll &p, ll v) { if (v < p) p = v; }
ll solve() {
  vector<vector<ll>> dp(n+1, vector<ll>(k+1, INF));
  dp[0][0] = 0;
  for (int kk = 0; kk < k; ++kk) {
    for (int i = 0; i < n; ++i) {
      int pr = i==0 ? -1 : a[i-1][1];
      int l = a[i][0], r = a[i][1];
      for (int j = i+1; j <= n; ++j) {
        r = a[j-1][1];
        minset(dp[j][kk+1], dp[i][kk] + sq(r-l+1) - sq(max(0, pr-l+1)));
      }
    }
 
 
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• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 9 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40