Compilare: user.cpp:2:15: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] #define NMax 1<<16 ^ user.cpp:7:9: note: in expansion of macro ‘NMax’ int mat[NMax+2]; ^ user.cpp: In function ‘int main()’: user.cpp:18:17: warning: unused variable ‘x’ [-Wunused-variable] int i,j,N,K,x; ^ user.cpp:15:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("narbi.in","r",stdin); ^ user.cpp:16:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("narbi.out","w",stdout); ^ user.cpp:20:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&N,&K,&prec.x); ^