結果

問題 No.1098 LCAs
ユーザー LayCurseLayCurse
提出日時 2020-06-26 21:41:42
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 79 ms / 2,000 ms
コード長 4,618 bytes
コンパイル時間 2,510 ms
コンパイル使用メモリ 211,788 KB
実行使用メモリ 20,060 KB
最終ジャッジ日時 2023-09-18 03:41:19
合計ジャッジ時間 5,048 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 3 ms
9,592 KB
testcase_01 AC 2 ms
9,584 KB
testcase_02 AC 2 ms
9,476 KB
testcase_03 AC 3 ms
9,492 KB
testcase_04 AC 2 ms
9,772 KB
testcase_05 AC 2 ms
9,492 KB
testcase_06 AC 3 ms
9,544 KB
testcase_07 AC 3 ms
9,488 KB
testcase_08 AC 3 ms
9,704 KB
testcase_09 AC 3 ms
9,512 KB
testcase_10 AC 2 ms
9,508 KB
testcase_11 AC 3 ms
9,752 KB
testcase_12 AC 3 ms
9,488 KB
testcase_13 AC 3 ms
9,500 KB
testcase_14 AC 3 ms
9,604 KB
testcase_15 AC 3 ms
9,500 KB
testcase_16 AC 3 ms
9,500 KB
testcase_17 AC 3 ms
9,564 KB
testcase_18 AC 43 ms
17,836 KB
testcase_19 AC 46 ms
17,796 KB
testcase_20 AC 45 ms
17,808 KB
testcase_21 AC 44 ms
17,860 KB
testcase_22 AC 42 ms
17,804 KB
testcase_23 AC 29 ms
19,884 KB
testcase_24 AC 30 ms
20,060 KB
testcase_25 AC 29 ms
19,860 KB
testcase_26 AC 27 ms
19,844 KB
testcase_27 AC 27 ms
19,840 KB
testcase_28 AC 60 ms
17,796 KB
testcase_29 AC 79 ms
17,796 KB
testcase_30 AC 66 ms
17,824 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#pragma GCC optimize ("Ofast")
#include<bits/stdc++.h>
using namespace std;
void *wmem;
char memarr[96000000];
template<class T> inline void walloc1d(T **arr, int x, void **mem = &wmem){
  static int skip[16] = {0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
  (*mem) = (void*)( ((char*)(*mem)) + skip[((unsigned long long)(*mem)) & 15] );
  (*arr)=(T*)(*mem);
  (*mem)=((*arr)+x);
}
inline int my_getchar_unlocked(){
  static char buf[1048576];
  static int s = 1048576;
  static int e = 1048576;
  if(s == e && e == 1048576){
    e = fread_unlocked(buf, 1, 1048576, stdin);
    s = 0;
  }
  if(s == e){
    return EOF;
  }
  return buf[s++];
}
inline void rd(int &x){
  int k;
  int m=0;
  x=0;
  for(;;){
    k = my_getchar_unlocked();
    if(k=='-'){
      m=1;
      break;
    }
    if('0'<=k&&k<='9'){
      x=k-'0';
      break;
    }
  }
  for(;;){
    k = my_getchar_unlocked();
    if(k<'0'||k>'9'){
      break;
    }
    x=x*10+k-'0';
  }
  if(m){
    x=-x;
  }
}
struct MY_WRITER{
  char buf[1048576];
  int s;
  int e;
  MY_WRITER(){
    s = 0;
    e = 1048576;
  }
  ~MY_WRITER(){
    if(s){
      fwrite_unlocked(buf, 1, s, stdout);
    }
  }
}
;
MY_WRITER MY_WRITER_VAR;
void my_putchar_unlocked(int a){
  if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){
    fwrite_unlocked(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout);
    MY_WRITER_VAR.s = 0;
  }
  MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a;
}
inline void wt_L(char a){
  my_putchar_unlocked(a);
}
inline void wt_L(long long x){
  int s=0;
  int m=0;
  char f[20];
  if(x<0){
    m=1;
    x=-x;
  }
  while(x){
    f[s++]=x%10;
    x/=10;
  }
  if(!s){
    f[s++]=0;
  }
  if(m){
    my_putchar_unlocked('-');
  }
  while(s--){
    my_putchar_unlocked(f[s]+'0');
  }
}
struct graph{
  int N;
  int *es;
  int **edge;
  void setEdge(int N__, int M, int A[], int B[], void **mem = &wmem){
    int i;
    N = N__;
    walloc1d(&es, N, mem);
    walloc1d(&edge, N, mem);
    for(i=(0);i<(N);i++){
      es[i] = 0;
    }
    for(i=(0);i<(M);i++){
      es[A[i]]++;
      es[B[i]]++;
    }
    for(i=(0);i<(N);i++){
      walloc1d(&edge[i], es[i], mem);
    }
    for(i=(0);i<(N);i++){
      es[i] = 0;
    }
    for(i=(0);i<(M);i++){
      edge[A[i]][es[A[i]]++] = B[i];
      edge[B[i]][es[B[i]]++] = A[i];
    }
  }
  void getDist(int root, int res[], void *mem = wmem){
    int i;
    int j;
    int k;
    int*q;
    int s;
    int z;
    walloc1d(&q, N, &mem);
    for(i=(0);i<(N);i++){
      res[i]=-1;
    }
    res[root]=0;
    s=0;
    z=1;
    q[0]=root;
    while(z){
      i=q[s++];
      z--;
      for(j=(0);j<(es[i]);j++){
        k=edge[i][j];
        if(res[k]>=0){
          continue;
        }
        res[k]=res[i]+1;
        q[s+z++]=k;
      }
    }
  }
  void SubTreeSize(int root, int res[], void *mem = wmem){
    int i;
    int j;
    int k;
    int m;
    int *q;
    int qs = 0;
    int qe = 1;
    walloc1d(&q,N,&mem);
    for(i=(0);i<(N);i++){
      res[i] = -1;
    }
    res[root] = 0;
    q[0] = root;
    while(qs < qe){
      i = q[qs++];
      for(j=(0);j<(es[i]);j++){
        k = edge[i][j];
        if(res[k]==0){
          continue;
        }
        res[k] = 0;
        q[qe++] = k;
      }
    }
    for(m=(N)-1;m>=(0);m--){
      i = q[m];
      res[i] = 1;
      for(j=(0);j<(es[i]);j++){
        k = edge[i][j];
        res[i] += res[k];
      }
    }
  }
}
;
int N;
int A[200000];
int B[200000];
graph g;
int sz[200000];
int dis[200000];
long long res[200000];
int main(){
  int i;
  wmem = memarr;
  rd(N);
  {
    int Lj4PdHRW;
    for(Lj4PdHRW=(0);Lj4PdHRW<(N-1);Lj4PdHRW++){
      rd(A[Lj4PdHRW]);A[Lj4PdHRW] += (-1);
      rd(B[Lj4PdHRW]);B[Lj4PdHRW] += (-1);
    }
  }
  g.setEdge(N,N-1,A,B);
  g.getDist(0, dis);
  g.SubTreeSize(0, sz);
  for(i=(0);i<(N);i++){
    int RZTsC2BF;
    res[i] = (long long) sz[i] * sz[i];
    for(RZTsC2BF=(0);RZTsC2BF<(g.es[i]);RZTsC2BF++){
      auto &j = g.edge[i][RZTsC2BF];
      if(dis[j] < dis[i]){
        continue;
      }
      res[i] -= (long long) sz[j] * sz[j];
    }
  }
  {
    int WYIGIcGE;
    for(WYIGIcGE=(0);WYIGIcGE<(N);WYIGIcGE++){
      wt_L(res[WYIGIcGE]);
      wt_L('\n');
    }
  }
  return 0;
}
// cLay varsion 20200509-1

// --- original code ---
// int N, A[2d5], B[2d5];
// graph g;
// int sz[2d5], dis[2d5];
// ll res[2d5];
// {
//   rd(N,(A--,B--)(N-1));
//   g.setEdge(N,N-1,A,B);
//   g.getDist(0, dis);
//   g.SubTreeSize(0, sz);
//   rep(i,N){
//     res[i] = (ll) sz[i] * sz[i];
//     rep[g.edge[i]](j,g.es[i]){
//       if(dis[j] < dis[i]) continue;
//       res[i] -= (ll) sz[j] * sz[j];
//     }
//   }
//   wtLn(res(N));
// }
0