ACM输入函数测试scanfcin优化的输入

inline int read()
{
    int X=0,w=1;
    char ch=0;
    while(ch<‘0‘ || ch>‘9‘)
    {
        if(ch==‘-‘) w=-1;
        ch=getchar();
    }
    while(ch>=‘0‘ && ch<=‘9‘) X=(X<<3)+(X<<1)+ch-‘0‘,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 
#include 
#include 
#include 
#include 

using namespace std;
const int maxn = 100000;
int a[maxn],b[maxn];

inline int read()
{
    int X=0,w=1;
    char ch=0;
    while(ch<‘0‘ || ch>‘9‘)
    {
        if(ch==‘-‘) w=-1;
        ch=getchar();
    }
    while(ch>=‘0‘ && ch<=‘9‘) X=(X<<3)+(X<<1)+ch-‘0‘,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 = 0 ; i )
    {
//        scanf("%d%d",&a[i],&b[i]);
//        cin >> a[i] >> b[i];
//        a[i] = read();
//        b[i] = read();
    }
    clock_t d = clock();
    cout < endl;

    fclose(stdin);
    fclose(stdout);
}