#ifndef EPR #ifdef USE_STDIO #define PR printf( #define EPR fprintf(stderr, #define SPR sprintf( #define WR(b,n) fwrite(b, 1, n, stdout) #define FLUSH fflush(stdout) #else #include <fio.h> extern int fprint(int, char*, ...); extern int sprint(char*, char*, ...); #define PR fprint(1, #define EPR fprint(2, #define SPR sprint( #define WR(b,n) write(1, b, (long)(n)) #define FLUSH Fflush(1) #endif #endif