Submission #387539

#	Time	Username	Problem	Language	Result	Execution time	Memory
387539		MilosMilutinovic	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	65 ms	13956 KiB

railroad

/**
 *    author:  milos
 *    created: 08.04.2021 21:49:49       
**/
#include <bits/stdc++.h>
 
using namespace std;

long long plan_roller_coaster(vector<int> s, vector<int> t) {
  int n = (int) s.size();
  const long long inf = 1e18;
  vector<vector<long long>> dp(1 << n, vector<long long>(n, inf));
  for (int i = 0; i < n; i++) {
    dp[0][i] = 0;
    dp[(1 << i)][i] = 0;
  }
  for (int i = 1; i < (1 << n); i++) {
    for (int j = 0; j < n; j++) {
      if (dp[i][j] != inf) {
        continue;
      }
      if (i & (1 << j)) {
        for (int k = 0; k < n; k++) {
          if (j != k && i & (1 << k)) {
            dp[i][j] = min(dp[i][j], dp[i - (1 << j)][k] + max(0, t[k] - s[j]));
          }
        }
      }
    }
  }
  long long ans = inf;
  for (int i = 0; i < n; i++) {
    ans = min(ans, dp[(1 << n) - 1][i]);
  }
  return ans;
}

• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36