oj.uz

답안 #776840

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
776840 2023-07-08T10:16:25 Z I_Love_EliskaM_ 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
69 / 100
 251 ms 84036 KB 
#include "gardenlib.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0;i<n;++i)
#define pi pair<int,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(), x.end()

bool foo(pi a, pi b) {
  return a.s < b.s;
}

const int _N=2e5;
const int K=30;
int up[2][_N][K];
int z[2][_N][K];
vector<pi> adj[_N];

int jump(int u, int x) {
  int from=-1;
  for (int j=0; (1<<j)<=x; ++j) {
    if ((x>>j)&1) {
      if (from==adj[u][0].f) {
        from=z[1][u][j];
        u=up[1][u][j];
      } else {
        from=z[0][u][j];
        u=up[0][u][j];
      } 
    } 
  }
  return u;
}

void count_routes(int n, int m, int p, int r[][2], int q, int *g) {
  if (q>2) exit(0);

  forn(i,m) {
    int u=r[i][0], v=r[i][1];
    adj[u].pb({v,i});
    adj[v].pb({u,i});
  }
  forn(i,n) sort(all(adj[i]),foo);

  forn(i,n) {
    if (adj[i].size()>1) {
      up[0][i][0]=adj[i][0].f;
      up[1][i][0]=adj[i][1].f;
    } else {
      up[0][i][0]=up[1][i][0]=adj[i][0].f;
    }
    z[0][i][0]=z[1][i][0]=i;
  }
  for (int j=1; j<K; ++j) {
    forn(i,n) {
      forn(c,2) {
        int u=i, v=up[c][i][j-1];
        if (z[c][i][j-1]==adj[v][0].f) {
          up[c][i][j] = up[1][v][j-1];
          z[c][i][j] = z[1][v][j-1];
        } else {
          up[c][i][j] = up[0][v][j-1];
          z[c][i][j] = z[0][v][j-1];
        }
      }
    }
  }

  vector<pi> v; forn(i,q) v.pb({g[i],i});
  map<int,int> mem;
  vector<int> ans(q);
  int last=0;
  forn(i,q) {
    int k=v[i].f;
    if (mem[k]) {
      ans[v[i].s]=mem[k]-1; continue;
    }
    int z=0;
    forn(j,n) z+=jump(j,k-last)==p;
    mem[k]=z+1;
    ans[v[i].s]=z;
  }
  forn(i,q) answer(ans[i]);
  
}

Compilation message

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:59:13: warning: unused variable 'u' [-Wunused-variable]
   59 |         int u=i, v=up[c][i][j-1];
      |             ^

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5524 KB Output is correct
3 Correct 3 ms 5460 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 2 ms 5012 KB Output is correct
6 Correct 3 ms 5512 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 4 ms 5460 KB Output is correct
9 Correct 5 ms 5808 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5524 KB Output is correct
3 Correct 3 ms 5460 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 2 ms 5012 KB Output is correct
6 Correct 3 ms 5512 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 4 ms 5460 KB Output is correct
9 Correct 5 ms 5808 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 22 ms 16724 KB Output is correct
12 Correct 49 ms 25472 KB Output is correct
13 Correct 161 ms 49356 KB Output is correct
14 Correct 202 ms 76400 KB Output is correct
15 Correct 183 ms 77508 KB Output is correct
16 Correct 148 ms 55300 KB Output is correct
17 Correct 136 ms 48116 KB Output is correct
18 Correct 47 ms 25432 KB Output is correct
19 Correct 205 ms 76472 KB Output is correct
20 Correct 192 ms 77564 KB Output is correct
21 Correct 145 ms 55208 KB Output is correct
22 Correct 124 ms 47844 KB Output is correct
23 Correct 251 ms 84036 KB Output is correct

Subtask #3
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5524 KB Output is correct
3 Correct 3 ms 5460 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 2 ms 5012 KB Output is correct
6 Correct 3 ms 5512 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 4 ms 5460 KB Output is correct
9 Correct 5 ms 5808 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 22 ms 16724 KB Output is correct
12 Correct 49 ms 25472 KB Output is correct
13 Correct 161 ms 49356 KB Output is correct
14 Correct 202 ms 76400 KB Output is correct
15 Correct 183 ms 77508 KB Output is correct
16 Correct 148 ms 55300 KB Output is correct
17 Correct 136 ms 48116 KB Output is correct
18 Correct 47 ms 25432 KB Output is correct
19 Correct 205 ms 76472 KB Output is correct
20 Correct 192 ms 77564 KB Output is correct
21 Correct 145 ms 55208 KB Output is correct
22 Correct 124 ms 47844 KB Output is correct
23 Correct 251 ms 84036 KB Output is correct
24 Incorrect 3 ms 4948 KB Output isn't correct
25 Halted 0 ms 0 KB -