Submission #165441

#	Time	Username	Problem	Language	Result	Execution time	Memory
165441		Segtree	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	140 ms	8696 KiB

railroad

#include<iostream>
#include<algorithm>
#include<vector>
#include"railroad.h"
using namespace std;
typedef long long ll;
#define chmin(a,b) a=min(a,b);
ll dp[(1<<16)][16];
ll plan_roller_coaster(vector<int> s,vector<int> t){
    int n=s.size();
    for(int i=0;i<(1<<n);i++)for(int j=0;j<n;j++)dp[i][j]=1e17;
    for(int j=0;j<n;j++){
	dp[(1<<j)][j]=0;
    }
    for(int i=1;i<(1<<n);i++)for(int j=0;j<n;j++){
	for(int k=0;k<n;k++){
	    if((i&(1<<k))==0)chmin(dp[i+(1<<k)][k],dp[i][j]+max(0LL,(ll)t[j]-s[k]));
	}
    }
    ll ans=1e17;
    for(int j=0;j<n;j++)chmin(ans,dp[(1<<n)-1][j]);
    return ans;
}

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