#include <stdio.h>

#define MAX_SIZE 10000

// reads integers into an array from terminal until a number is entered 
// which when multiplied by another number previously entered 
// results in 56. 
// ./array_multiplied
// 2
// 3
// 28
// 28 * 2 = 56

// ./array_multiplied
// 99
// 4
// 1
// 7
// 56
// 56 * 1 = 56

#define TARGET 56

int main(void) {
    // what type of read loop do we need?
    int numbers[MAX_SIZE];
    int i = 0;

    while (i < MAX_SIZE) {
        // read in the next number
        scanf("%d", &numbers[i]);

        // check if the product of this number and any of
        // the previous ones is 56. if so, we're done.

        int j = 0;
        while (j < i) {
            // check if numbers[i] * numbers[j] == 56
            if (numbers[i] * numbers[j] == TARGET) {
                printf("%d * %d = %d\n", numbers[i],
                    numbers[j], numbers[i] * numbers[j]);
                return 0;
            }
            j++;
        }
        i++;
    }

    // will only happen if run out of array space
    return 0;
}