camp.cpp: In function 'void lee(int, int, int, int)': camp.cpp:110: warning: unused variable 'p' camp.cpp: In function 'int main()': camp.cpp:192: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result camp.cpp:193: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result camp.cpp:196: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result camp.cpp:197: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result camp.cpp:200: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result