PAT (Advanced Level) Practice 1054 The Dominant Color (20 分) map使用
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 [0,224). 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
程式碼如下
#include <cstdio> #include <cstring> #include <algorithm> #include <iostream> #include <map> using namespace std; int m,n; map<string,int>ma; string s,ans; int Max=-0x3f3f3f3f; int main() { scanf("%d%d",&m,&n); for (int i=0;i<n;i++) { for (int j=0;j<m;j++) { cin>>s; ma[s]++; if(Max<ma[s]) { ans=s; } } } cout<<ans<<endl; return 0; }