Compilare: user.cpp: In function ‘int dfs(int, int, int)’: user.cpp:27: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int dfs(int, int, int)’: user.cpp:42: warning: control reaches end of non-void function user.cpp:24: warning: ‘poz’ may be used uninitialized in this function