Submission #798750

#	Time	Username	Problem	Language	Result	Execution time	Memory
798750		NeroZein	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	38 ms	13876 KiB

railroad

#include "railroad.h"
#include "bits/stdc++.h"
using namespace std;

const long long INF = 1e18;

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
  int n = (int) s.size();
  vector<vector<long long>> dp(1 << n, vector<long long> (n, INF));
  for (int i = 0; i < n; ++i) {
    dp[1 << i][i] = 0; 
  }
  for (int msk = 1; msk < (1 << n); ++msk) {
    for (int i = 0; i < n; ++i) {
      if (!(msk >> i & 1)) continue;
      for (int j = 0; j < n; ++j) {
        if (msk >> j & 1) continue;
        dp[msk | (1 << j)][j] = min(dp[msk | (1 << j)][j], dp[msk][i] + max(0, t[i] - 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