Submission #600138

#	Time	Username	Problem	Language	Result	Execution time	Memory
600138		Hazem	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	44 ms	10560 KiB

railroad

#include <bits/stdc++.h>

using namespace std;

const long long LINF = 1e18;

long long dp[100000][20];

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    int n = (int) s.size();

    for(int i=0;i<(1<<n);i++)
        for(int j=0;j<n;j++)
            dp[i][j] = LINF;

    for(int i=0;i<n;i++)
        dp[1<<i][i] = 0;

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

    long long ans = LINF;
    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