Submission #62499

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
62499	2018-07-28 19:34:23	zetapi	Parachute rings (IOI12_rings)	C++14	100 / 100	1040 ms	57172 KiB

rings

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int n, cyc, Res;
int E[1010000][3], deg[5][1010000], chk[5], Num[5];
int par[5][1010000], SZ[1010000];
void Init(int N_) {
  n = N_;
  Res = n;
  int i;
  for (i = 1; i <= n; i++)SZ[i] = 1, par[0][i] = i;
}
 
int Find(int ck, int a){
  if (par[ck][a] == a)return a;
  return par[ck][a] = Find(ck, par[ck][a]);
}
 
void Add(int ck, int a, int b){
  if (chk[ck])return;
  if (ck && (Num[ck] == a || Num[ck] == b))return;
  if (!ck){
    E[a][deg[0][a]] = b, E[b][deg[0][b]] = a;
  }
  deg[ck][a]++, deg[ck][b]++;
  if (ck && (deg[ck][a] >= 3 || deg[ck][b] >= 3)){
    chk[ck] = 1;
    return;
  }
  a = Find(ck, a), b = Find(ck, b);
  if (a == b){
    if (!ck){
      cyc++;
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 14 / 14
• Subtask 5: 31 / 31