-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathp10608 - Friends v2.cpp
149 lines (142 loc) · 3.93 KB
/
p10608 - Friends v2.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <string>
#include <cstring>
#include <vector>
#include <queue>
#include <stack>
#include <algorithm>
#include <functional>
#include <list>
#include <map>
#include <utility>
#include <sstream>
#include <fstream>
using namespace std;
typedef long long int ll;
typedef int _i;
typedef vector<int> vi;
typedef vector<long long int> vll;
typedef vector<char> vc;
typedef vector<string> vs;
typedef priority_queue<int> pqi;
typedef priority_queue<long long int> pql;
typedef priority_queue<string> pqs;
typedef map<int, int> mii;
typedef map<long long int, long long int> mll;
typedef map<int, string> mis;
typedef map<long long int, string> mls;
typedef map<int, char> mic;
typedef map<char, int> mci;
typedef map<string, int> msi;
typedef map<string, long long int> msl;
typedef pair<int, int> pii;
typedef pair<long long int, long long int> pll;
typedef pair<int, string> pis;
typedef pair<string, int> psi;
typedef pair<long long int, string> pls;
typedef pair<string, long long int> psl;
typedef queue<int> qi;
typedef queue<long long int> ql;
typedef queue<string> qs;
typedef deque<int> di;
typedef deque<ll> dl;
typedef deque<char> dc;
typedef deque<string> ds;
#define IMAX 2147483647
#define IMIN -2147483646
#define fr(x) freopen(x, "r", stdin)
#define fo(x) freopen(x, "w", stdout)
#define pfi(x) printf("%d", x)
#define pfin(x) printf("%d\n", x)
#define pfl(x) printf("%lld", x)
#define pfln(x) printf("%lld\n", x)
#define pff(x) printf("%f", x)
#define pffn(x) printf("%f\n", x)
#define pfd(x) printf("%lf", x)
#define pfdn(x) printf("%lf\n", x)
#define pfc(x) printf("%c", x)
#define pfcn(x) printf("%c\n", x)
#define pfcs(x) printf("%s", x)
#define pfcsn(x) printf("%s\n", x)
#define pfs(x) printf("%s", x.c_str())
#define pfsn(x) printf("%s\n", x.c_str())
#define pfn() printf("\n")
#define pfsp() printf(" ")
#define sci(x) scanf("%d", &x)
#define scii(x, y) scanf("%d %d", &x, &y)
#define scl(x) scanf("%lld", &x)
#define scll(x, y) scanf("%lld %lld", &x, &y)
#define sclll(x, y, z) scanf("%lld %lld %lld", &x, &y, &z)
#define scf(x) scanf("%f", &x)
#define scff(x, y) scanf("%f %f", &x, &y)
#define scd(x) scanf("%lf", &x)
#define scdd(x, y) scanf("%lf %lf", &x, &y)
#define scc(x) scanf(" %c", &x)
#define sccs(x) scanf("%s", x)
#define scss(x, y) scanf("%s %s", x, y)
#define scs(x) getline(cin, x)
#define gt() getchar()
#define pb(x, y) x.push_back(y)
#define pu(x, y) x.push(y)
#define mp(a, b) make_pair(a, b)
#define mset(x, y) memset(x, y, sizeof(x))
#define pcase(x) printf("Case %d: ", x)
#define lp(a, x, n, y) for(a=x; a<n; a+=y)
#define lpe(a, x, n, y) for(a=x; a<=n; a+=y)
#define sln(x) x.size()
#define acl(x) x.clear()
#define qcl(x) {while(!x.empty()) x.pop(); }
template<class T> T maxT(T a, T b) {return a>b ? a: b;}
template<class T> T gcd(T a,T b) {return a==0 ? b : gcd(b % a, a);}
template<class T> T power(T x, T y) {T a,i; a=1; for(i=0; i<y; i++) a*=x; return a;}
#define N 30000
int ct[N+2];
int parent[N+2];
int node_rank[N+2];
void create_node(int n) {
ct[n] = 0;
parent[n] = n;
node_rank[n] = 1;
return ;
}
int find_parent(int n) {
if(parent[n]==n) return n;
return parent[n] = find_parent(parent[n]);
}
void merge_node(int x, int y) {
int a = find_parent(x);
int b = find_parent(y);
if(a==b) return ;
if(node_rank[a]>node_rank[b]) {
parent[b] = a;
node_rank[a] = node_rank[a] + node_rank[b];
}else {
parent[a] = b;
node_rank[b] = node_rank[b] + node_rank[a];
}
return ;
}
int main()
{
//fr("p10608.txt");
int i, j, k, n, x, t, y, m, mx;
sci(t);
for(i=1; i<=t; i++) {
scii(n, m);
for(j=1; j<=n; j++) create_node(j);
for(j=0; j<m; j++) {
scii(x, y);
merge_node(x, y);
}
mx = 0;
for(j=1; j<=n; j++) {
x = find_parent(j);
ct[x]++;
mx = max(mx, ct[x]);
}
pfin(mx);
}
}