2 += 1000000000
2 -= 1
0 += 1000000000
0 -= 1
0 += 1000000000
0 -= 1
2 += 1000000000
1 += 1000000000
0 += 1000000000
0 -= 1
3 += 1000000000
3 -= 1
3 -= 1
3 -= 1
3 -= 1
3 -= 1
3 -= 1
0 += 1000000000
0 -= 1
0 -= 1
0 -= 1
4 += 1000000000
4 -= 1
4 -= 1
4 -= 1
4 -= 1
4 -= 1
4 -= 1
1 += 1000000000
1 -= 1
3999999994 1999999999 1999999999 999999994 999999994