Codeforces Round #374 (Div. 2) B. Passwords —

题目链接：http://codeforces.com/contest/721/problem/B

B. Passwords

time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Vanya is managed to enter his favourite site Codehorses. Vanya uses n distinct passwords for sites at all, however he can't remember
which one exactly he specified during Codehorses registration.

Vanya will enter passwords in order of non-decreasing their lengths, and he will enter passwords of same length in arbitrary order. Just when Vanya will have entered the correct password, he is immediately authorized on the site. Vanya will not enter any password
twice.

Entering any passwords takes one second for Vanya. But if Vanya will enter wrong password k times, then he is able to make the next
try only 5 seconds after that. Vanya makes each try immediately, that is, at each moment when Vanya is able to enter password, he is doing
that.

Determine how many seconds will Vanya need to enter Codehorses in the best case for him (if he spends minimum possible number of second) and in the worst case (if he spends maximum possible amount of seconds).

Input

The first line of the input contains two integers n and k (1 ≤ n, k ≤ 100) —
the number of Vanya's passwords and the number of failed tries, after which the access to the site is blocked for 5 seconds.

The next n lines contains passwords, one per line — pairwise distinct non-empty strings consisting of latin letters and digits. Each
password length does not exceed 100 characters.

The last line of the input contains the Vanya's Codehorses password. It is guaranteed that the Vanya's Codehorses password is equal to some of his n passwords.

Output

Print two integers — time (in seconds), Vanya needs to be authorized to Codehorses in the best case for him and in the worst case respectively.

Examples

input

5 2

cba

abc

bb1

abC

ABC

abc

output

1 15

input

output

3 4

Note

Consider the first sample case. As soon as all passwords have the same length, Vanya can enter the right password at the first try as well as at the last try. If he enters it at the first try, he spends exactly 1 second.
Thus in the best case the answer is 1. If, at the other hand, he enters it at the last try, he enters another 4 passwords
before. He spends 2 seconds to enter first 2 passwords,
then he waits 5seconds as soon as he made 2 wrong
tries. Then he spends 2 more seconds to enter 2 wrong
passwords, again waits 5 seconds and, finally, enters the correct password spending 1 more
second. In summary in the worst case he is able to be authorized in 15 seconds.

Consider the second sample case. There is no way of entering passwords and get the access to the site blocked. As soon as the required password has length of 2,
Vanya enters all passwords of length 1 anyway, spending 2 seconds
for that. Then, in the best case, he immediately enters the correct password and the answer for the best case is 3, but in the worst case he
enters wrong password of length 2 and only then the right one, spending 4 seconds
at all.

题解：

1.首先，用string肯定比char方便很多。其次，由于长度最大只为100，所以可以开个 len[100]数组，记录每种长度下有多少个字符串，（特例：passwords只记录一次，因为一遇到passwords就结束了）。

2.不管最大值还是最小值，都需要将长度小于passwords的字符串走完，对于最小情况，走的第一个长度等于passwords的字符，即为passwords；对于最大情况，走的最后一个长度等于passwords的字符，即为passwords。

细节：当到达终点的那一刻，如果正好走了k*i步，他也不需要罚时，因为已经到达终点了，需要特判一下。

代码如下：

#include <iostream>

#include <cstdio>

#include <cstring>

#include <cstdlib>

#include <string>

#include <vector>

#include <map>

#include <set>

#include <queue>

#include <stack>

#include <sstream>

#include <algorithm>

using namespace std;

#define ms(a, b)  memset((a), (b), sizeof(a))

typedef long long LL;

const double eps = 1e-6;

const int INF = 2e9;

const LL LNF = 9e18;

const int mod = 1e9+7;

const int maxn = 100+10;

int n, len[maxn], k;

string s[maxn], x;

void init()

{

    cin>>n>>k;

    for(int i = 1; i<=n; i++)

        cin>>s[i];

    cin>>x;

}

void solve()

{

    int B = 0;

    for(int i = 1; i<=n; i++)

    {

        if(s[i]==x)

        {

            if(!B)

                len[x.size()]++, B = 1;

        }

        else

            len[s[i].size()]++;

    }

    int sum = 0;

    for(int i = 1; i<x.size(); i++)

        sum += len[i];

    int t1 = sum + 1;

    int minn = t1 + (t1/k)*5;

    if(t1%k==0) minn -= 5;

    int t2 = sum + len[x.size()];

    int maxx = t2 + (t2/k)*5;

    if(t2%k==0) maxx -= 5;

    printf("%d %d\n",minn, maxx);

}

int main()

{

//    int T;

//    scanf("%d",&T);

//    while(T--)

    {

        init();

        solve();

    }

    return 0;

}

巴特西

Codeforces Round #374 (Div. 2) B. Passwords —— 基础题

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