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Submission #165348

# Submission time Handle Problem Language Result Execution time Memory
165348 2019-11-26T12:58:40 Z cbertram Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
60 / 100
 500 ms 831592 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long int ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<bool> vb;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<string> vs;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;
typedef vector<vvvb> vvvvb;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<vvvi> vvvvi;
typedef vector<vll> vvll;
#define all(x) x.begin(), x.end()
#define rep(i,a,b) for(int i = a; i < b; i++)
#define relax(a, b) a = min(a,b)

int posNow(vvi &pos, vvi &behind, int c, int i, int R, int G, int Y) {
  int p = pos[c][i];
  return p+max(0,R-behind[0][p])+max(0,G-behind[1][p])+max(0,Y-behind[2][p]);
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  int N;
  cin >> N;
  vi S(N);
  string sS;
  cin >> sS;
  rep(n,0,N) {
    switch(sS[n]) {
    case 'R': S[n] = 0; break;
    case 'G': S[n] = 1; break;
    case 'Y': S[n] = 2; break;
    }
  }
  vvi pos(3, vi(0));
  rep(n,0,N) pos[S[n]].push_back(n);
  vvi behind(3, vi(N+1));
  rep(c,0,3) {
    int i = 0;
    rep(n,0,N+1) {
      behind[c][n] = i;
      if(i < (int)pos[c].size() && pos[c][i] == n) i++;
    }
  }
  vvvvi steps(N+1, vvvi(N+1, vvi(N+1, vi(3, 1000000000))));
  vvvvb vis(N+1, vvvb(N+1, vvb(N+1, vb(3))));
  steps[0][0][0][0] = 0;
  steps[0][0][0][1] = 0;
  steps[0][0][0][2] = 0;
  queue<int> q;
  q.push(0);
  q.push(1);
  q.push(2);
  while(!q.empty()) {
    int front = q.front();
    q.pop();
    int R = front/3/N/N;
    int G = (front/3/N)%N;
    int Y = (front/3)%N;
    int C = front%3;
    int here = steps[R][G][Y][C];
    int used = R+G+Y;
    if(here == 1000000000) continue;
    if(R < (int)pos[0].size() && !vis[R+1][G][Y][0]) {
      vis[R+1][G][Y][0] = true;
      q.push((R+1)*N*N*3 + G*N*3 + Y*3 + 0);
    }
    if(G < (int)pos[1].size() && !vis[R][G+1][Y][1]) {
      vis[R][G+1][Y][1] = true;
      q.push(R*N*N*3 + (G+1)*N*3 + Y*3 + 1);
    }
    if(Y < (int)pos[2].size() && !vis[R][G][Y+1][2]) {
      vis[R][G][Y+1][2] = true;
      q.push(R*N*N*3 + G*N*3 + (Y+1)*3 + 2);
    }
    //cerr << "(R,G,Y,C) = ("<<R<<", "<<G<<", "<<Y<<", "<<C<<") "<<here<<"\n";
    if(R < (int)pos[0].size() && C != 0) relax(steps[R+1][G][Y][0], here+posNow(pos, behind, 0, R, R, G, Y)-used);
    if(G < (int)pos[1].size() && C != 1) relax(steps[R][G+1][Y][1], here+posNow(pos, behind, 1, G, R, G, Y)-used);
    if(Y < (int)pos[2].size() && C != 2) relax(steps[R][G][Y+1][2], here+posNow(pos, behind, 2, Y, R, G, Y)-used);
  }

  int res = 1000000000;
  relax(res, steps[(int)pos[0].size()][(int)pos[1].size()][(int)pos[2].size()][0]);
  relax(res, steps[(int)pos[0].size()][(int)pos[1].size()][(int)pos[2].size()][1]);
  relax(res, steps[(int)pos[0].size()][(int)pos[1].size()][(int)pos[2].size()][2]);
  if(res == 1000000000)
    cout << "-1\n";
  else
    cout << res << '\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 3 ms 888 KB Output is correct
6 Correct 3 ms 888 KB Output is correct
7 Correct 3 ms 888 KB Output is correct
8 Correct 3 ms 888 KB Output is correct
9 Correct 3 ms 888 KB Output is correct
10 Correct 3 ms 888 KB Output is correct
11 Correct 4 ms 1064 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 888 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 3 ms 888 KB Output is correct
16 Correct 3 ms 888 KB Output is correct
17 Correct 3 ms 760 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 3 ms 888 KB Output is correct
6 Correct 3 ms 888 KB Output is correct
7 Correct 3 ms 888 KB Output is correct
8 Correct 3 ms 888 KB Output is correct
9 Correct 3 ms 888 KB Output is correct
10 Correct 3 ms 888 KB Output is correct
11 Correct 4 ms 1064 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 888 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 3 ms 888 KB Output is correct
16 Correct 3 ms 888 KB Output is correct
17 Correct 3 ms 760 KB Output is correct
18 Correct 53 ms 29304 KB Output is correct
19 Correct 54 ms 29292 KB Output is correct
20 Correct 53 ms 29304 KB Output is correct
21 Correct 53 ms 29344 KB Output is correct
22 Correct 52 ms 29288 KB Output is correct
23 Correct 59 ms 29304 KB Output is correct
24 Correct 55 ms 29304 KB Output is correct
25 Correct 50 ms 29304 KB Output is correct
26 Correct 51 ms 29304 KB Output is correct
27 Correct 52 ms 29304 KB Output is correct
28 Correct 53 ms 29304 KB Output is correct
29 Correct 57 ms 29304 KB Output is correct
30 Correct 53 ms 29264 KB Output is correct
31 Correct 56 ms 29216 KB Output is correct
32 Correct 52 ms 29304 KB Output is correct
33 Correct 49 ms 27928 KB Output is correct
34 Correct 49 ms 27964 KB Output is correct
35 Correct 48 ms 26488 KB Output is correct
36 Correct 55 ms 27868 KB Output is correct
37 Correct 45 ms 25208 KB Output is correct
38 Correct 53 ms 29432 KB Output is correct
39 Correct 55 ms 29304 KB Output is correct
40 Correct 49 ms 27896 KB Output is correct
41 Correct 51 ms 29236 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Execution timed out 1165 ms 831592 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 3 ms 888 KB Output is correct
6 Correct 3 ms 888 KB Output is correct
7 Correct 3 ms 888 KB Output is correct
8 Correct 3 ms 888 KB Output is correct
9 Correct 3 ms 888 KB Output is correct
10 Correct 3 ms 888 KB Output is correct
11 Correct 4 ms 1064 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 888 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 3 ms 888 KB Output is correct
16 Correct 3 ms 888 KB Output is correct
17 Correct 3 ms 760 KB Output is correct
18 Correct 53 ms 29304 KB Output is correct
19 Correct 54 ms 29292 KB Output is correct
20 Correct 53 ms 29304 KB Output is correct
21 Correct 53 ms 29344 KB Output is correct
22 Correct 52 ms 29288 KB Output is correct
23 Correct 59 ms 29304 KB Output is correct
24 Correct 55 ms 29304 KB Output is correct
25 Correct 50 ms 29304 KB Output is correct
26 Correct 51 ms 29304 KB Output is correct
27 Correct 52 ms 29304 KB Output is correct
28 Correct 53 ms 29304 KB Output is correct
29 Correct 57 ms 29304 KB Output is correct
30 Correct 53 ms 29264 KB Output is correct
31 Correct 56 ms 29216 KB Output is correct
32 Correct 52 ms 29304 KB Output is correct
33 Correct 49 ms 27928 KB Output is correct
34 Correct 49 ms 27964 KB Output is correct
35 Correct 48 ms 26488 KB Output is correct
36 Correct 55 ms 27868 KB Output is correct
37 Correct 45 ms 25208 KB Output is correct
38 Correct 53 ms 29432 KB Output is correct
39 Correct 55 ms 29304 KB Output is correct
40 Correct 49 ms 27896 KB Output is correct
41 Correct 51 ms 29236 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Execution timed out 1165 ms 831592 KB Time limit exceeded
44 Halted 0 ms 0 KB -