首页 > 代码库 > Codeforces Beta Round #4 (Div. 2 Only) A. Watermelon

Codeforces Beta Round #4 (Div. 2 Only) A. Watermelon

水题一个,就是记录下已经做过了。


题目大意:

给出一个数,问是否能分成两个偶数。


下面是代码:

#include <set>
#include <map>
#include <queue>
#include <math.h>
#include <vector>
#include <string>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>
#include <cctype>
#include <algorithm>

#define eps 1e-10
#define pi acos(-1.0)
#define inf 107374182
#define inf64 1152921504606846976
#define lc l,m,tr<<1
#define rc m + 1,r,tr<<1|1
#define zero(a) fabs(a)<eps
#define iabs(x)  ((x) > 0 ? (x) : -(x))
#define clear1(A, X, SIZE) memset(A, X, sizeof(A[0]) * (min(SIZE,sizeof(A))))
#define clearall(A, X) memset(A, X, sizeof(A))
#define memcopy1(A , X, SIZE) memcpy(A , X ,sizeof(X[0])*(SIZE))
#define memcopyall(A, X) memcpy(A , X ,sizeof(X))
#define max( x, y )  ( ((x) > (y)) ? (x) : (y) )
#define min( x, y )  ( ((x) < (y)) ? (x) : (y) )

using namespace std;


int main()
{
    int num;
    scanf("%d",&num);
    bool flat=false;
    for(int i=2;i<num;i+=2)
    {
        if((num-i)%2==0)
        {
            flat=true;
            break;
        }
    }
    if(flat)puts("YES");
    else puts("NO");
    return 0;
}


Codeforces Beta Round #4 (Div. 2 Only) A. Watermelon