1 | #include "stub.h" |
2 | |
3 | int total = 0; |
4 | |
5 | int inc(int x) { |
6 | switch (x) { |
7 | case 0: total += 1 + 0; return 1; |
8 | case 1: total += 1 + 1; return 2; |
9 | case 2: total += 1 + 2; return 3; |
10 | case 3: total += 1 + 3; return 4; |
11 | case 4: total += 1 + 4; return 5; |
12 | case 5: total += 1 + 5; return 6; |
13 | default: return x + 1; |
14 | } |
15 | } |
16 | |
17 | int inc_dup(int x) { |
18 | switch (x) { |
19 | case 0: total += 2 + 0; return 1; |
20 | case 1: total += 2 + 1; return 2; |
21 | case 2: total += 2 + 2; return 3; |
22 | case 3: total += 2 + 3; return 4; |
23 | case 4: total += 2 + 4; return 5; |
24 | case 5: total += 2 + 5; return 6; |
25 | default: return x + 1; |
26 | } |
27 | } |
28 | |
29 | int main() { |
30 | int c = 0; |
31 | for (int i = 0; i < 10000000; ++i) { |
32 | int a = rand() % 7; |
33 | int b = rand() % 7; |
34 | c += inc(x: a) - 2*inc_dup(x: b); |
35 | } |
36 | return c == 0; |
37 | } |
38 | |