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#include
int paren(int x) { if(x % 2 == 0) { return 1; } else { return 0; } } int main() { int n; scanf("%d", &n); int prethoden = 0; int brojac = 0; for(int i = 0; i < n; i++) { int x; scanf("%d", &x); if(prethoden != 0) { if(paren(x) && paren(prethoden)) { brojac++; } else if(!paren(x) && !paren(prethoden)) { brojac++; } } prethoden = x; } printf("%d\n", brojac); return 0; }
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