Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:19: error: request for member ‘vfc’ in ‘c[x][(++ c[x][0])]’, which is of non-class type ‘long long int’ user.cpp:21: error: request for member ‘cost’ in ‘c[x][(++ c[x][0])]’, which is of non-class type ‘long long int’ user.cpp:9: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result