Compilare: user.cpp:13: warning: non-local variable ‘<anonymous struct> st [100001]’ uses anonymous type user.cpp: In function ‘void solve()’: user.cpp:41: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void suma(long int, long int)’: user.cpp:88: warning: ‘pf’ may be used uninitialized in this function