Problem 1002 Typical mistakes/misunderstanings and hack data I used

fcxxzux2 | 2014-12-13 21:03:18Author
0 0 0 0 --Yes 2 4 4 2 --Yes 2*1 1 1 0 + 2* 0 1 1 1 0 19 20 0 --Yes 3 1 0 0 --No 1 1 1 2 --No 15 235 444 12789 --Yes 1 2 3 4 --No