Eroare de compilare: user.cpp: In function ‘ull cabana(ull, ull, ull)’: user.cpp:61:23: error: ‘v’ was not declared in this scope return fast_pow_mod(v[c], divider, mod); ^ user.cpp:65:23: error: ‘v’ was not declared in this scope return fast_pow_mod(v[c], divider, mod) * arrs(c, p % c, mod); ^ user.cpp: In function ‘int main(int, char**)’: user.cpp:76:7: warning: unused variable ‘line’ [-Wunused-variable] char line[100]; ^ user.cpp: In function ‘ull cabana(ull, ull, ull)’: user.cpp:67:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main(int, char**)’: user.cpp:77:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d\n",&T); ^ user.cpp:81:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d %d\n", &N, &K); ^