Submission #599920

#	Time	Username	Problem	Language	Result	Execution time	Memory
599920		Shin	Building Bridges (CEOI17_building)	C++14	30 / 100	3074 ms	3244 KiB

building

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define all(x) x.begin(), x.end()

using namespace std;
template <class X, class Y> bool minimize(X &a, Y b) {
    if (a > b) return a = b, true;
    return false;
}
template <class X, class Y> bool maximize(X &a, Y b) {
    if (a < b) return a = b, true;
    return false;
}

const int N = 1e5 + 7;
int n;
int a[N];
long long dp[N];
long long pref[N];

signed main() {
  cin.tie(0)->sync_with_stdio(0);
  cin >> n;
  for (int i = 1; i <= n; i ++) {
    cin >> a[i];
  }
  for (int i = 1; i <= n; i ++) {
    int x; cin >> x;
    pref[i] = pref[i - 1] + x;
  }
  #define SQR(x) 1LL * (x) * (x)
  memset(dp, 0x3f, sizeof dp);
  dp[1] = 0;
  for (int i = 2; i <= n; i ++) {
    for (int j = 1; j < i; j ++) {
      minimize(dp[i], dp[j] + SQR(a[i] - a[j]) + pref[i - 1] - pref[j]);
    }
  }
  cout << dp[n];
  return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40