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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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float a;
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cin >> a;
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int b = int(a * 10);
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bool first = true;
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while (b) {
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cout << b % 10;
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if (first) {
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cout << ".";
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first = false;
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}
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b /= 10;
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}
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return 0;
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}
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