Submission #435848

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
435848	2021-06-23 19:32:33	Hegdahl	Aliens (IOI16_aliens)	C++17	4 / 100	9 ms	220 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; }
pair<ll, int> solve(ll penalty) {
  vector<ll> cost(n+1, INF);
  vector<int> used(n+1, 0);
  cost[0] = 0;
  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];
      ll c = cost[i] + sq(r-l+1) - sq(max(0, pr-l+1)) + penalty;
      if (c < cost[j]) {
        cost[j] = c;
        used[j] = used[i]+1;
 
 
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