题解 | 图像相似度

#include <stdio.h>

int main()
{
	int m = 0;
	int n = 0;
	scanf("%d %d", &m, &n);
	int arr1[50][50] = { 0 };
	int i = 0;
	int j = 0;
	for (i = 0; i < m; i++)
	{
		for (j = 0; j < n; j++)
		{
			scanf("%d", &arr1[i][j]);
		}
	}
	int arr2[50][50] = { 0 };
	for (i = 0; i < m; i++)
	{
		for (j = 0; j < n; j++)
		{
			scanf("%d", &arr2[i][j]);
		}
	}
	int count = 0;
	for (i = 0; i < m; i++)
	{
		for (j = 0; j < n; j++)
		{
			if (arr1[i][j] == arr2[i][j])
			{
				count++;
			}
		}
	}
	printf("%.2f\n", (float)count * 2 * 100/ (2 * m * n));
	return 0;
}