work/source: In function ‘int main()’:
work/source:34: error: ‘sol’ was not declared in this scope
work/source:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result
work/source:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result
