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#include <iostream>
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//#include <cassert>
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using namespace std;
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int main() {
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int x;
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cout<<"请输入一个3位的整数"<<endl;
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cin >> x;
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//assert(x >= 100 && x <= 999);
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x = x + x*1000;
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x = x/(7*11*13);
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cout << x << endl;
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return 0;
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}
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