Submission #66307

#	Time	Username	Problem	Language	Result	Execution time	Memory
66307		mirbek01	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	84 ms	17292 KiB

railroad

# include "railroad.h"
# include <bits/stdc++.h>

using namespace std;

const int N = (1 << 17);

long long dp[17][N];

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
      int n = (int) s.size();
      for(int i = 1; i < N; i ++)
            for(int j = 0; j < n; j ++)
                  dp[j][i] = 1e18;
      for(int i = 0; i < n; i ++){
            dp[i][1 << i] = 0;
      }

      for(int mask = 1; mask < (1 << n); mask ++){
            for(int i = 0; i < n; i ++){
                  if(mask & (1 << i)) continue;
                  int to = mask + (1 << i);
                  for(int j = 0; j < n; j ++){
                        if(!(mask & (1 << j))) continue;
                        dp[i][to] = min(dp[i][to], dp[j][mask] + max(t[j] - s[i], 0));
                  }
            }
      }

      long long ans = 1e18;

      for(int i = 0; i < n; i ++)
            ans = min(ans, dp[i][(1 << n) - 1]);

      return ans;
}

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