Compilare: user.cpp:30:11: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] int dist[1<<N+1]; ^ user.cpp:37:10: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] int res[1<<N+1]; ^ user.cpp:40:12: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] To father[1<<N+1]; ^ user.cpp: In function ‘int main()’: user.cpp:138:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("boom.in","r",stdin); ^ user.cpp:139:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("boom.out","w",stdout); ^ user.cpp:140:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:146:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&s[i].c,&nr); ^ user.cpp:149:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^