luogu#P12096. [NERC2024] Expression Correction
[NERC2024] Expression Correction
2+2=4
Correct
123456789+9876543210=111111110+11-1
123456789+987654321=1111111100+11-1
10+9=10
Impossible
24=55-13
42=55-13
1000000000-10=9999999999
Impossible