During a contest , whether penalty is cut from the total score or only from the score of the problem on which I was penalized.

Suppose during a contest , I submit problem A and then solve problem B . I get penalty for problem C and then the contest ends . So , will the -50 for the penalty will be cut from the total score that I have achieved or no points will be deducted because I did not submit the correct solution of problem C.

Please help !!