Submission #848534

#	Time	Username	Problem	Language	Result	Execution time	Memory
848534		n3rm1n	Collecting Stamps 3 (JOI20_ho_t3)	C++17	0 / 100	12 ms	344 KiB

ho_t3

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const long long MAXN = 205;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
long long n, l, a[MAXN], t[MAXN];
void read()
{
    cin >> n >> l;
    for (long long i = 1; i <= n; ++ i)
        cin >> a[i];
    for (long long i = 1; i <= n; ++ i)
        cin >> t[i];
}
long long p[MAXN], used[MAXN], ans = 0;
void check()
{
    long long ttime = 0, on = 0, cnt = 0;
    for (long long i = 1; i <= n; ++ i)
    {
        long long go = a[p[i]];
        ttime += min(go - on, l - go + on);
        if(ttime <= t[p[i]])cnt ++;
    }
    ans = max(ans, cnt);
}
void gen(long long pos)
{
    if(pos > n)
    {
        check();
        return;
    }
    for (long long i = 1; i <= n; ++ i)
    {
        if(!used[i])
        {
            used[i] = 1;
            p[pos] = i;
            gen(pos+1);
            used[i] = 0;
        }
    }
}
int main()
{
    speed();

    read();
    gen(1);
    cout << ans << endl;
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 75