Compilare: user.cpp: In function ‘void read()’: user.cpp:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp: In function ‘void solve()’: user.cpp:29: warning: operation on ‘DimST’ may be undefined user.cpp: In function ‘void print()’: user.cpp:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result /tmp/ccOIZ3at.o: In function `read()': user.cpp:(.text+0x15f): warning: the `gets' function is dangerous and should not be used.