Compilare: user.cpp: In function ‘void inm(int (*)[2][20010], int (*)[2][20010], int (*)[2][20010])’: user.cpp:82: warning: unused variable ‘k’ user.cpp: In function ‘int pow(int (*)[2][20010], int)’: user.cpp:124: warning: no return statement in function returning non-void user.cpp: In function ‘int main()’: user.cpp:128: warning: unused variable ‘i’ user.cpp:128: warning: unused variable ‘j’ user.cpp:129: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:130: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:143: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result