extern unsigned long long strtoull(const char *ptr, char **end, int base);\r
extern unsigned long strtoul(const char *ptr, char **end, int base);\r
extern int atoi(const char *ptr);\r
extern unsigned long long strtoull(const char *ptr, char **end, int base);\r
extern unsigned long strtoul(const char *ptr, char **end, int base);\r
extern int atoi(const char *ptr);\r