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#include
int rek(int x) { if(x > 9 && x < 100) { return 1; } if(x < 10) { return 0; } return rek(x / 100); } int main () { int n; scanf("%d", &n); printf("%d\n", rek(n)); return 0; } // rek(1234) = rek(12) = 1 // rek(12) = 1 // rek(12345) = rek(123) = 0 // rek(123) = rek(1) = 0 // rek(1) = 0
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