1、题目链接地址
http://poj.org/problem?id=1161
2、源代码
#include <iostream> using namespace std; int parent[30001]; int suspect[30001]; int find(int x) { if(parent[x] == x) { return x; } else { return parent[x] = find(parent[x]); } } void Union(int a, int b) { int x = find(a); int y = find(b); if(x == y) { return; } parent[y] = x; suspect[x] = suspect[x] + suspect[y]; } int main() { int m, n; int a, b, c; int x; int i; while(cin >> m >> n) { if(m == 0 && n == 0) { break; } for(i = 0; i <= m; i++) { parent[i] = i; suspect[i] = 1; } while(n--) { cin >> a >> b; a--; while(a--) { cin >> c ; if(find(c) != find(b)) { Union(c, b); } } } cout << suspect[find(0)] << endl; } return 0; }
时间: 2024-12-17 23:23:15