Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:19:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(it!=tata) ^ main.cpp:13:15: warning: unused variable 'pct' [-Wunused-variable] int num=0,pct=0; ^~~ main.cpp: In function 'int main()': main.cpp:57:9: warning: unused variable 'q' [-Wunused-variable] int q,n,m,x,y,i,j; ^ main.cpp:57:21: warning: unused variable 'j' [-Wunused-variable] int q,n,m,x,y,i,j; ^ main.cpp:58:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("clepsidra.in","r",stdin); ^ main.cpp:59:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("clepsidra.out","w",stdout); ^ main.cpp:60:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:63:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^