Compilare: main.cpp: In function 'void read()': main.cpp:25:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&delta); ^ main.cpp:27:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&t,&p); ^ main.cpp: In function 'int main()': main.cpp:145:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ramen.in","r",stdin); ^ main.cpp:146:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ramen.out","w",stdout); ^ main.cpp: In function 'void take(int)': main.cpp:104:14: warning: 'j' is used uninitialized in this function [-Wuninitialized] for(i=1,j>>=1;i<=ln;++i,j>>=1) { ~^~~~