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 = -1,num = 1,temp;
  
  cin>>M>>N;
  
  int motal = M*N;
  
  for(int i=0;i<motal;++i)
  {
    cin>>temp;
    
    if(color != temp && num > 1)
    {
      color = temp;
      --num;
    }
    else if(color != temp && num == 1)
      color = temp;
    else
      ++num;
  }
  
  cout<<color<<endl;
  
  return 0;
}