work/source: In function ‘int main()’:
work/source:62: error: ‘R’ was not declared in this scope
work/source:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result
work/source:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result
work/source:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
work/source:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
work/source:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
work/source:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
