###### tags: `code`
# c14086028-homework-7-1

#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#define N 4
int main() {
	int A[N] = { 50,10,5,1 };
	int j = 0;
	for (int a = 0; a < 2; a++) {
		for (int b = 0; b < 7; b++) {
			for (int c = 0; c < 14; c++) {
				for (int d = 0; d < 66; d++) {
					if (a * A[0] + b * A[1] + c * A[2] + d * A[3] == 65) {
						printf("the ( %d,%d,%d,%d ) is solution of integer of 50x+10y+5z+1w=65\n", a, b, c, d);
						j++;
					}
				}
			}
		}
	}
	if(j!=0){
		printf("the 50x+10y+5z+1w have %d solutions\n",j);
	}
	else {
		printf("the 50x+10y+5z+1w don't have any solution");
	}
	
	system("pause");
	return 0;
}