#include <iostream>   using namespace std; int mainrqaewsfaef() {     int w;/* 长 */     int h;/* 宽 */     int des=0;     cin >> w >> h;     int arr[100][100] = { 0 };     /* 填二维数组 */     for (int i=0;i<h;i++)     {         for (int j=0;j<w;j+=2)         {             if ((j%4)==0)             {                 arr[i][j +1] = 1;                 arr[i][j] = 1;             }             else             {                 arr[i][j + 1] = 0;                 arr[i][j] = 0;             }         }     }     for (int i = 2; i < h; i+=4)     {         for (int j = 0; j < w; j += 2)         {             if ((j % 4) == 0)             {                 arr[i][j + 1] =0;                 arr[i + 1][j + 1] = 0;                 arr[i][j] = 0;                 arr[i + 1][j] = 0;             }             else             {                 arr[i][j + 1] = 1;                 arr[i + 1][j + 1] = 1;                 arr[i][j] = 1;                 arr[i + 1][j] = 1;             }         }     }     for (int i = 0; i < h; i++)     {         for (int j = 0; j < w; j++)         {              if (arr[i][j]==1)              {                  des++;              }         }     }     cout << des<<endl;     system("pause");      return 0; }