inline int read()

{

    int X=,w=;

    char ch=;

    while(ch<'' || ch>'')

    {

        if(ch=='-') w=-;

        ch=getchar();

    }

    while(ch>='' && ch<='') X=(X<<)+(X<<)+ch-'',ch=getchar();

    return X*w;

}

/*

@theme:ACM输入输出测试

@writer:pprp

@declare:测试scanf，优化的输入，和cin

@date:2017/8/26

*/

#include <bits/stdc++.h>

#include <iostream>

#include <time.h>

#include <windows.h>

#include <unistd.h>

using namespace std;

const int maxn = ;

int a[maxn],b[maxn];

inline int read()

{

    int X=,w=;

    char ch=;

    while(ch<'' || ch>'')

    {

        if(ch=='-') w=-;

        ch=getchar();

    }

    while(ch>='' && ch<='') X=(X<<)+(X<<)+ch-'',ch=getchar();

    return X*w;

}

int main()

{

    ios::sync_with_stdio(false);

    freopen("out.txt","r",stdin);

//  freopen("out.txt","w",stdout);

    clock_t c = clock();

    for(int i =  ; i < maxn ; i++)

    {

//        scanf("%d%d",&a[i],&b[i]);

//        cin >> a[i] >> b[i];

//        a[i] = read();

//        b[i] = read();

    }

    clock_t d = clock();

    cout << d - c << endl;

    fclose(stdin);

    fclose(stdout);

}