Submission #523520

#	Time	Username	Problem	Language	Result	Execution time	Memory
523520		Pety	Skyline (IZhO11_skyline)	C++14	100 / 100	69 ms	48448 KiB

skyline

#include <bits/stdc++.h>
#define ll long long

using namespace std;

const int INF = 1e9;
const int MOD = 1e9 + 7;

int n, v[302], dp[302][202][202];

int main () 
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++)
    cin >> v[i];
  for (int i = 1; i <= 301; i++)
    for (int j = 0; j <= 201; j++)
      for (int k = 0; k <= 201; k++)
        dp[i][j][k] = INF;
      
  for (int i = 0; i <= v[1]; i++)
    dp[2][v[2]][i] = dp[1][i][0] = 3 * (v[1] - i);
  for (int i = 2; i <= n; i++) {
      for (int j = v[i]; j >= 0; j--)
        for (int k = v[i - 1]; k >= 0; k--) 
          dp[i][j][k] = min(dp[i][j + 1][k] + 3, dp[i][j][k]);
        
      for (int j = v[i]; j >= 0; j--)
        for (int k = v[i - 1]; k >= 0; k--) 
          dp[i][j][k] = min(dp[i][j + 1][k + 1] + 5, dp[i][j][k]);
    if (i == n)
      continue;
    for (int j = min(v[i], min(v[i + 1], v[i - 1])); j >= 0; j--)
      for (int k = v[i]; k >= j; k--)
        dp[i + 1][v[i + 1] - j][k - j] = min(dp[i + 1][v[i + 1] - j][k - j], dp[i][k][j] + 7 * j);
  }
  cout << dp[n][0][0];
  return 0;
}

• Subtask 1: 100 / 100