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#include <iostream>
using namespace std;
int main()
{
bool found0, found1, found2, found3, found4, found5, found6, found7, found8, found9;
found0 = found1 = found2 = found3 = found4 = found5 = found6 = found7 = found8 = found9 = false;
int n;
cin >> n;
bool foundDuplicate = false;
while (!foundDuplicate && n != 0)
{
int lastDigit = n % 10;
switch (lastDigit)
{
case 0:
if (found0)
{
foundDuplicate = true;
}
found0 = true;
break;
case 1:
if (found1)
{
foundDuplicate = true;
}
found1 = true;
break;
case 2:
if (found2)
{
foundDuplicate = true;
}
found2 = true;
break;
case 3:
if (found3)
{
foundDuplicate = true;
}
found3 = true;
break;
case 4:
if (found4)
{
foundDuplicate = true;
}
found4 = true;
break;
case 5:
if (found5)
{
foundDuplicate = true;
}
found5 = true;
break;
case 6:
if (found6)
{
foundDuplicate = true;
}
found6 = true;
break;
case 7:
if (found7)
{
foundDuplicate = true;
}
found7 = true;
break;
case 8:
if (found8)
{
foundDuplicate = true;
}
found8 = true;
case 9:
if (found9)
{
foundDuplicate = true;
}
found9 = true;
break;
}
n /= 10;
}
cout << foundDuplicate;
}
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