PAT 甲级 1054 The Dominant Color （20 分）

1054 The Dominant Color （20 分）

Behind the scenes in the computer's memory, color is always talked about as a series of 24 bits of information for each pixel. In an image, the color with the largest proportional area is called the dominant color. A strictly dominant color takes more than half of the total area. Now given an image of resolution M by N (for example, 800×600), you are supposed to point out the strictly dominant color.

Input Specification:

Each input file contains one test case. For each case, the first line contains 2 positive numbers: M (≤800) and N (≤600) which are the resolutions of the image. Then N lines follow, each contains M digital colors in the range [0,2​24​​). It is guaranteed that the strictly dominant color exists for each input image. All the numbers in a line are separated by a space.

Output Specification:

For each test case, simply print the dominant color in a line.

Sample Input:

5 3
0 0 255 16777215 24
24 24 0 0 24
24 0 24 24 24

Sample Output:

24

 #include<iostream>

 using namespace std;

 int main()
 {
   int M,N,color = -,num = ,temp;

   cin>>M>>N;

   int motal = M*N;

   for(int i=;i<motal;++i)
   {
     cin>>temp;

     if(color != temp && num > )
     {
       color = temp;
       --num;
     }
     else if(color != temp && num == )
       color = temp;
     else
       ++num;
   }

   cout<<color<<endl;

   return ;
 }