LCA, T9 tasks

Crape, Fuck!!!
Submition on Yandex 2 tasks:
1) LCA task with some modifications: 1 fail submit is for difference Microsoft compiler and GCC. FUCK ALL!! Next submition was great, ALL is OK!!))
2) T9 task submitted with some errors 4 times:
a) the difference from compilers
b) shit, wrong answer detected, sort function worked bad(
c) again wrong answer, sort worked bad cause of redefenition of < operator for struct
d) Shit............ A programmer trap!!! I have defined an array for M char elements, cin.getline() reads till end.. and... no place for '\0' symbol. Rrrr...X_x
e) After correcting a,b,c,d system showed me ALL OK!!