Compilare: main.cpp: In function 'void dfs3(int)': main.cpp:33:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(f[i]==1 && i==1 && steve.size()==rez) ~~~~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:51:17: warning: unused variable 'ind' [-Wunused-variable] int n,i,x,y,ind; ^~~ main.cpp:52:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.in","r",stdin); ^ main.cpp:53:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.out","w",stdout); ^ main.cpp:54:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:57:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^