lab4(126)

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#include <iostream> using namespace std; int main() { int a, b, c, d, n; cin>>a>>b>>c>>d; if(a==b && b==c && c!=d){ n = 4; }else if(a==b && b==d && d!=c){ n = 3; }else if(a==d && d==c && c!=b){ n = 2; } else if(b==c && c==d && d!=a){ n = 1; } else { cout<<"Ошибка!"; } cout <<n; return 0; }
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