Submission #206346

#	Time	Username	Problem	Language	Result	Execution time	Memory
206346		autumn_eel	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	80 ms	8572 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

const ll INF=0x3f3f3f3f3f3f3f3f;

ll dp[1<<16][16];
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    int n = (int) s.size();
    assert(n<=16);
    memset(dp,0x3f,sizeof(dp));
    rep(i,n){
		dp[1<<i][i]=0;
	}
    rep(i,1<<n)rep(j,n){
		if(dp[i][j]==INF)continue;
		rep(k,n){
			if(i>>k&1)continue;
			ll cost=dp[i][j]+max(0,t[j]-s[k]);
			dp[i|1<<k][k]=min(dp[i|1<<k][k],cost);
		}
	}
	return *min_element(dp[(1<<n)-1],dp[(1<<n)-1]+n);
}

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