Score : 300 points
Sitting in a station waiting room, Joisino is gazing at her train ticket.
The ticket is numbered with four digits A, B, C and D in this order, each between 0 and 9 (inclusive).
In the formula A op1 B op2 C op3 D = 7, replace each of the symbols op1, op2 and op3 with +
or -
so that the formula holds.
The given input guarantees that there is a solution. If there are multiple solutions, any of them will be accepted.
Input is given from Standard Input in the following format:
ABCD
Print the formula you made, including the part =7
.
Use the signs +
and -
.
Do not print a space between a digit and a sign.
1222
1+2+2+2=7
This is the only valid solution.
0290
0-2+9+0=7
0 - 2 + 9 - 0 = 7 is also a valid solution.
3242
3+2+4-2=7