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#include <stdio.h> int rek(int x, int pogolemi, int pomali) { if(x == 0) { if(pogolemi > pomali) { return 1; } else { return 2; } } int cifra = x % 10; if(cifra > 4) { return rek(x / 10, pogolemi + 1, pomali); } else { return rek(x / 10, pogolemi, pomali + 1); } } int main () { int n; scanf("%d", &n); printf("%d\n", rek(n, 0, 0)); return 0; } // rek(123456, 0, 0) = rek(12345, 1, 0) = 2 // rek(12345, 1, 0) = rek(1234, 2, 0) = 2 // rek(1234, 2, 0) = rek(123, 2, 1) = 2 // rek(123, 2, 1) = rek(12, 2, 2) = 2 // rek(12, 2, 2) = rek(1, 2, 3) = 2 // rek(1, 2, 3) = rek(0, 2, 4) = 2 // rek(0, 2, 4) = 2
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