48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#include <cstdio>
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#include <iostream>
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#include <string>
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#include <sstream>
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#include <cstring>
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using namespace std;
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const int N = 20;
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int m, n, d[N];
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int main() {
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string s;
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while (getline(cin, s), s != "ENDOFINPUT") {
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memset(d, 0, sizeof d); // 多组测试数据，清空度数组
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istringstream sin;
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sin.str(s); // 用s输入进行构建
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sin >> s >> m >> n; // 进1出3
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int cnt = 0;
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for (int i = 0; i < n; i++) {
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getline(cin, s); // 读取整行
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if (!s.size()) continue; // 如果本行输入是空的，那么处理下一行
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sin.clear(); // istringstream这东西如果想重复使用，需要先清空
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sin.str(s); // 用s输入进行构建
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int j;
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while (sin >> j) { // 循环输出j
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d[i]++, d[j]++;
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++cnt;
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}
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}
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// 读入END
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getline(cin, s);
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// 检查欧拉回路和欧拉路径
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int odd = 0;
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for (int i = 0; i < n; i++)
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if (d[i] % 2) odd++;
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if (odd == 0 && m == 0)
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cout << "YES " << cnt << endl;
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else if (odd == 2 && m != 0 && d[0] % 2 == 1 && d[m] % 2 == 1)
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cout << "YES " << cnt << endl;
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else
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cout << "NO" << endl;
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}
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return 0;
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} |