OJ Board

hello! I think my program is correct, but when I use the example input: 12 3 1 6 3 9 2 8 4 9 6 9 9 8 9 6 5 5 8 4 4 3 5 1 3 I get 22 points in stead of 21. With some inputs the output is correct, but with others it is not. I've verified the area and the amount of external points (including the ones t...

I get 223 lines of output but the judge tells me WA. Here's the code, could you help me

My program has 223 lines of output, and the first ones are exactly the same as in the problem set, but I keep getting wrong answer. Does anyone know what could be wrong?