Compilare: user.cpp: In function ‘void Solve()’: user.cpp:54:9: warning: unused variable ‘i’ [-Wunused-variable] int i,gata=0; ^ user.cpp: In function ‘void Write()’: user.cpp:86:33: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::queue<std::pair<int, int> >::size_type {aka long unsigned int}’ [-Wformat=] printf("%d\n",q.size()); ^ user.cpp:71:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void Read()’: user.cpp:16:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revolutie.in","r",stdin); ^ user.cpp:18:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp: In function ‘void Write()’: user.cpp:72:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revolutie.out","w",stdout); ^