Submission #787518

#	Time	Username	Problem	Language	Result	Execution time	Memory
787518		fatemetmhr	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	39 ms	9028 KiB

railroad

//  ~ Be Name Khoda ~  //

#include "railroad.h"
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")

using namespace std;

typedef long long ll;

#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second

const int maxn  =  1e6   + 10;
const int maxn5 =  5e5   + 10;
const int maxnt =  1.2e6 + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   + 7;
const ll  inf   =  1e18;

ll dp[(1 << 16)][17];


long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    int n = (int) s.size();
    for(int mask = 1; mask < (1 << n); mask++){
        for(int i = 0; i < n; i++) if((mask >> i)&1){
            int mask2 = mask ^ (1 << i);
            if(mask2 == 0){
                dp[mask][i] = 0;
                continue;
            }
            dp[mask][i] = inf;
            for(int j = 0; j < n; j++) if((mask2 >> j)&1){
                dp[mask][i] = min(dp[mask][i], dp[mask2][j] + max(0, t[j] - s[i]));
                //cout << mask << ' ' << mask2 << ' ' << i << ' ' << j << ' ' << dp[mask][i] << ' ' << t[j] << ' ' << s[i] << endl;
            }
        }
    }
    ll mn = inf;
    for(int i = 0; i < n; i++)
        mn = min(mn, dp[(1 << n) - 1][i]);
    return mn;
}

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