25 lines
675 B
C++
25 lines
675 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 21;
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int b[N];
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int main() {
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int start = 0;
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for (int i = 1; i <= 20; i++) { // 按的20次
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for (int j = start; j < start + i; j++) { // 举栗子： 10开始按3个，10,11,12
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b[j % 20 + 1]++; // 记录被按下的次数
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cout << j % 20 + 1 << " "; // 输出本次被接下的房间号
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}
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cout << endl;
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start = (start + i) % 20;
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}
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int cnt = 0;
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for (int i = 1; i <= 20; i++)
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if (b[i] % 2 == 0) cnt++;
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cout << "Last On Count:" << cnt << endl;
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return 0;
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}
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