The problem is on the Input sheet. The cells C43, C50, C57, C64 contain strings which represent eferences to another sheet's cells (CC!A1, CC!A10, CC!A6, CC!A6). The syntax of the strings is Excel's.
LO uses another syntax by default: like CC.A1 (notice dot instead of exclamation). You may change it on Tools>Options>LibreOffice Calc>Formula>Custom>Details.... Be prepared for other problems though.