#include<iostream> #include<cstdio> #include<cstdlib> #include<cmath> #include<algorithm> #include<vector> #include<set> #include<map> #include<stack> #include<queue> #include<list> #include<string> #include<cstring> using namespace std; #define PB push_back #define MP make_pair #define F first #define S second #define ALL(x) (x).begin(),(x).end() #define SIZE(x) (int)(x).size() #define SORT(x) sort((x).begin(),(x).end()) #define CLEAR(tab) memset(tab, 0, sizeof(tab)) #define REP(x, n) for(int x = 0; x < (n); x++) #define FOR(x, b, e) for(int x = (b); x <= (e); x++) #define FORD(x, b, e) for(int x = (b); x >= (e); x--) #define VAR(v, n) __typeof(n) v = (n) #define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i) #define DEBUG(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__) const int MAX_BUF_SIZE = 16384; char BUFOR[MAX_BUF_SIZE]; int BUF_SIZE, BUF_POS; char ZZZ; #define GET(ZZZ){ZZZ='a';if(BUF_POS<BUF_SIZE)ZZZ=BUFOR[BUF_POS++];\ else if(!feof(stdin)){BUF_SIZE=fread(BUFOR,1,MAX_BUF_SIZE,stdin);\ ZZZ=BUFOR[0];BUF_POS=1;}} #define GI(WW){do{GET(ZZZ);}while(!isdigit(ZZZ));WW=ZZZ-'0';\ while(1){GET(ZZZ);if(!isdigit(ZZZ))break;WW=WW*10+(ZZZ-'0');}} #define GC(WW){do{GET(ZZZ);}while(!isalpha(ZZZ));WW=ZZZ;} //FAST IO typedef long long int LL; typedef pair<int,int> PII; typedef vector<int> VI; const int MXN = 200010; const int C = 262144; const int INF = 1000000001; int n, m, d; VI G[MXN]; int deg[MXN]; int active[MXN]; int skl[MXN]; int skla; int cnt; int best, num; VI res; void dfs(int x) { skl[x] = skla; cnt++; FOREACH(it, G[x]) if(active[*it] && !skl[*it]) dfs(*it); } int main() { scanf("%d %d %d", &n, &m, &d); FOR(i, 1, m) { int a, b; scanf("%d %d", &a, &b); G[a].PB(b); G[b].PB(a); deg[a]++; deg[b]++; } FOR(i, 1, n) if(deg[i]) active[i] = 1; queue<int> Q; FOR(i, 1, n) if(deg[i] < d) { active[i] = 0; Q.push(i); } while(!Q.empty() ) { int w = Q.front(); Q.pop(); FOREACH(it, G[w]) { deg[*it]--; if(deg[*it] < d && active[*it]) { active[*it] = 0; Q.push(*it); } } } FOR(i, 1, n) { skla++; cnt = 0; if(active[i] && !skl[i]) dfs(i); if(cnt > best) { best = cnt; num = skla; } } if(best == 0) { printf("NIE\n"); return 0; } FOR(i, 1, n) if(skl[i] == num) res.PB(i); SORT(res); printf("%d\n", best); FOREACH(it, res) printf("%d ", *it); printf("\n"); return 0; }
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 | #include<iostream> #include<cstdio> #include<cstdlib> #include<cmath> #include<algorithm> #include<vector> #include<set> #include<map> #include<stack> #include<queue> #include<list> #include<string> #include<cstring> using namespace std; #define PB push_back #define MP make_pair #define F first #define S second #define ALL(x) (x).begin(),(x).end() #define SIZE(x) (int)(x).size() #define SORT(x) sort((x).begin(),(x).end()) #define CLEAR(tab) memset(tab, 0, sizeof(tab)) #define REP(x, n) for(int x = 0; x < (n); x++) #define FOR(x, b, e) for(int x = (b); x <= (e); x++) #define FORD(x, b, e) for(int x = (b); x >= (e); x--) #define VAR(v, n) __typeof(n) v = (n) #define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i) #define DEBUG(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__) const int MAX_BUF_SIZE = 16384; char BUFOR[MAX_BUF_SIZE]; int BUF_SIZE, BUF_POS; char ZZZ; #define GET(ZZZ){ZZZ='a';if(BUF_POS<BUF_SIZE)ZZZ=BUFOR[BUF_POS++];\ else if(!feof(stdin)){BUF_SIZE=fread(BUFOR,1,MAX_BUF_SIZE,stdin);\ ZZZ=BUFOR[0];BUF_POS=1;}} #define GI(WW){do{GET(ZZZ);}while(!isdigit(ZZZ));WW=ZZZ-'0';\ while(1){GET(ZZZ);if(!isdigit(ZZZ))break;WW=WW*10+(ZZZ-'0');}} #define GC(WW){do{GET(ZZZ);}while(!isalpha(ZZZ));WW=ZZZ;} //FAST IO typedef long long int LL; typedef pair<int,int> PII; typedef vector<int> VI; const int MXN = 200010; const int C = 262144; const int INF = 1000000001; int n, m, d; VI G[MXN]; int deg[MXN]; int active[MXN]; int skl[MXN]; int skla; int cnt; int best, num; VI res; void dfs(int x) { skl[x] = skla; cnt++; FOREACH(it, G[x]) if(active[*it] && !skl[*it]) dfs(*it); } int main() { scanf("%d %d %d", &n, &m, &d); FOR(i, 1, m) { int a, b; scanf("%d %d", &a, &b); G[a].PB(b); G[b].PB(a); deg[a]++; deg[b]++; } FOR(i, 1, n) if(deg[i]) active[i] = 1; queue<int> Q; FOR(i, 1, n) if(deg[i] < d) { active[i] = 0; Q.push(i); } while(!Q.empty() ) { int w = Q.front(); Q.pop(); FOREACH(it, G[w]) { deg[*it]--; if(deg[*it] < d && active[*it]) { active[*it] = 0; Q.push(*it); } } } FOR(i, 1, n) { skla++; cnt = 0; if(active[i] && !skl[i]) dfs(i); if(cnt > best) { best = cnt; num = skla; } } if(best == 0) { printf("NIE\n"); return 0; } FOR(i, 1, n) if(skl[i] == num) res.PB(i); SORT(res); printf("%d\n", best); FOREACH(it, res) printf("%d ", *it); printf("\n"); return 0; } |