1054.The Dominant Color

题目描述

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

代码

#include 
#include 
using namespace std;
map d;
int main() {
    int m, n, v, maxn = -1, maxd = 0;
    scanf("%d %d\n", &m, &n);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> v;
            d[v]++;
        }
    }
    for (auto it = d.begin(); it != d.end(); it++) {
        if (it->second > maxn) {
            maxn = it->second;
            maxd = it->first;
        }
    }
    cout << maxd;
    return 0;
}

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