num1,operation,num2,output,flag
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,other
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,other
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,other
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,off by one
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign
0,,0,0,wrong sign