Compilare: user.cpp: In function ‘void Solve2()’: user.cpp:94:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int it = 0;it < G[S[K].Cell].size();it++) ^ user.cpp:104:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < Path.size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:110:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cartite.in","r",stdin); ^ user.cpp:111:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cartite.out","w",stdout); ^ user.cpp:113:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&P); ^ user.cpp:114:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&N,&M); ^ user.cpp:115:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&X0,&Y0); ^ user.cpp:116:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&K); ^ user.cpp:121:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n",&X,&Y,&R); ^ user.cpp:137:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&Nr); ^ user.cpp:145:18: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(st); ^ /tmp/ccWWW6oy.o: In function `main': user.cpp:(.text.startup+0x25b): warning: the `gets' function is dangerous and should not be used.