Submission #421583

#	Time	Username	Problem	Language	Result	Execution time	Memory
421583		balbit	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	72 ms	15920 KiB

railroad

#include "railroad.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pii pair <int, int >
#define f first
#define s second

#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())


#define MX(a,b) a = max(a,b)
#define MN(a,b) a = min(a,b)

#ifdef BALBIT
#define bug(...) cerr<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<"- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T && x, S && ...y) {cerr<<x<<", "; _do(y...);}
#else
#define bug(...)
#endif // BALBIT


#define pb push_back
#define REP(i,n) for (int i = 0; i<(n); ++i)
#define REP1(i,n) for (int i = 1; i<=(n); ++i)


//signed main(){
//    bug(1,2);
//}

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

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    int n = (int) s.size();
    memset(dp, 0x3f, sizeof dp);
    ll re = 0x3f3f3f3f3f3f3f3f;
    REP(m,1<<n) {
        REP(v,n) {
            if (m & (1<<v)) {
                if (m==(1<<v)) {
                    dp[m][v] = 0;
                    continue;
                }
                REP(u,n) {
                    if (u!=v && m & (1<<u)) {
                        MN(dp[m][v], dp[m^(1<<v)][u] + max(0,  t[u] - s[v]));
                    }
                }
            }
            if (m == (1<<n)-1) {
                MN(re, dp[m][v]);
            }
        }
    }

    return re;
}

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