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int inc(int x) {
switch (x) {
case 0: puts("0"); return 1;
case 1: puts("1"); return 2;
case 2: puts("2"); return 3;
case 3: puts("3"); return 4;
case 4: puts("4"); return 5;
case 5: puts("5"); return 6;
default: return x + 1;
}
}
int inc_dup(int x) {
switch (x) {
case 0: puts("0"); return 1;
case 1: puts("1"); return 2;
case 2: puts("2"); return 3;
case 3: puts("3"); return 4;
case 4: puts("4"); return 5;
case 5: puts("5"); return 6;
default: return x + 1;
}
}
int main() {
return inc(5) - 2*inc_dup(2);
}
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