I hope I can explain myself well. I have tried several but I it didn't work I hope you can help me.

I have three columns, A, B, C. What I do is a formula in excel that I look in column A all the same type of data (samedata) and column B grab all who are of the same data (samedata1) and sum all the values of that condition from the colum C

If column A = "samedata" AND column B = "samedata2"
SUM the Values on Column C

Thanks For the help