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24 lines
372 B
C++
24 lines
372 B
C++
#include <iostream>
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using std::cin;
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using std::cout;
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using std::endl;
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const int N = 2005;
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int n, x;
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bool tag[N];
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> n;
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do {
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tag[x] = true;
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int t = 0;
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while (tag[++t] && t <= 2 * n + 1) {}
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tag[t] = true;
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cout << t << endl;
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} while (cin >> x, x);
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return 0;
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}
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