Submission #947448

#	Time	Username	Problem	Language	Result	Execution time	Memory
947448		phoenix0423	Stray Cat (JOI20_stray)	C++17	15 / 100	37 ms	16516 KiB

Anthony

#include<bits/stdc++.h>
using namespace std;
typedef pair<int, int> pll;
#define pb push_back
#define eb emplace_back
const int INF = 1e9;
#include "Anthony.h"

vector<int> Mark(int n, int m, int a, int b, vector<int> u, vector<int> v){
    vector<vector<pll>> adj(n);
    vector<int> dist(n, INF), deg(n);
    dist[0] = 0;
    for(int i = 0; i < m; i++){
        adj[u[i]].eb(v[i], i);
        adj[v[i]].eb(u[i], i);
        deg[u[i]] ++, deg[v[i]] ++;
    }
    vector<int> color(m, -1);
    vector<int> bd(n);
    bd[0] = 0;
    queue<pll> q;
    q.push({0, 0});
    if(a >= 3){
        while(!q.empty()){
            auto [pos, lst] = q.front(); q.pop();
            for(auto [x, id] : adj[pos]){
                if(color[id] != -1) continue;
                if(dist[x] != INF){
                  if(dist[x] >= dist[pos]) color[id] = (lst + 1) % a;
                  else color[id] = lst;
                  continue;
                }
                // cout<<"do : "<<pos<<" "<<x<<" "<<lst<<"\n";
                dist[x] = dist[pos] + 1;
                color[id] = (lst + 1) % a;
                q.push({x, color[id]});
            }
        }
        // cout<<"dist : ";
        // for(auto x : dist) cout<<x<<" ";
        // cout<<"\n";
    }
    else{
        string ck = "121221";
        while(!q.empty()){
            auto [pos, lst] = q.front(); q.pop();
            int put;
            if(deg[pos] > 2){
                if(ck[lst] == '1') put = 1;
                else put = 0;
            }
            else put = (lst + 1) % 6;
            for(auto [x, id] : adj[pos]){
                if(dist[x] != INF) continue;
                dist[x] = dist[pos] + 1;
                color[id] = (ck[put] - '1');
                q.push({x, put});
            }
        }
    }
    return color;
}

// signed main(void){
//     int n, m, a, b, s;
//     cin>>n>>m>>a>>b>>s;
//     vector<int> u(m), v(m);
//     for(int i = 0; i < m; i++) cin>>u[i]>>v[i];
//     auto c = Mark(n, m, a, b, u, v);
//     for(auto x : c) cout<<x<<" ";
//     cout<<"\n";
// }

Catherine

#include "Catherine.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;

int A, B, lst = -1, ok = 0, bk = 0;
int fir = 0;
string ck = "";
string s = "121221121221";

void Init(int a, int b){
    A = a, B = b;
}

int find_dir(){
  for(int i = 0; i < 6; i++){
    int dif = 0;
    for(int j = 0; j < 5; j++) if(ck[j] != s[i + j]){
      dif = 1;
      break;
    }
    if(!dif) return 1;
  }
  return 0;
}
int Move(vector<int> y){
  if(bk){
    bk--;
    return -1;
  }
  // cout<<"ck : "<<A<<" "<<B<<"\n";
  if(lst != -1) y[lst]++;
  int deg = 0;
  for(auto x : y) deg += (x != 0);
  if(A >= 3){
      if(deg == 1){
          return max_element(y.begin(), y.end()) - y.begin();
      }
      for(int i = 0; i < A; i++){
          // cout<<"try : "<<i<<" "<<y[i]<<" "<<y[(i + 1) % A]<<"\n";
          if(y[i] && y[(i + 1) % A]){
              return i;
          }
      }
  }
  // a = 2
  deg = accumulate(y.begin(), y.end(), 0);
  // cout<<"deg : "<<deg<<"\n";
  if(deg == 1){
    // cout<<"nothing, back\n";
    ok = 1;
    if(lst == -1){
      lst = y[0] == 0;
      return lst;
    }
    else return -1;
  }
  if(deg > 2){
      ok = 1;
      if(y[0] == 1){
        int tmp = lst;
        lst = 0;
        if(tmp == 0) return -1;
        return 0;
      }
      else{
        int tmp = lst;
        lst = 1;
        if(lst == 1) return -1;
        else return 1;
      }
  }
  // deg = 2
  if(ok){
    y[lst]--;
    if(y[0]){
      lst = 0;
      return 0;
    }
    lst = 1;
    return 1;
  }
  auto rot = [&]() -> int{
    // cout<<"end, change dir\n";
    int d = find_dir();
    ok = 1;
    if(!d){
      bk = 2;
      lst = fir;
      return -1;
    }
    y[lst] --;
    if(y[0]){
      lst = 0;
      return 0;
    }
    else{
      lst = 1;
      return 1;
    }
  };
  if(lst == -1){
    if(y[0] == 2){
      ck += "00", lst = 0;
      fir = 0;
      return 0;
    }
    else if(y[1] == 2){
      ck += "11", lst = 0;
      fir = 1;
      return 1;
    }
    else{
      ck += "01", lst = 1;
      fir = 1;
      return 1;
    }
  }
  else{
    y[lst] --;
    if(y[0]){
      ck += '0';
      if(ck.size() == 5) return rot();
      lst = 0;
      return 0;
    }
    else{
      ck += '1';
      if(ck.size() == 5) return rot();
      lst = 1;
      return 1;
    }
  }
}
/*
7 6 3 6 1
0 2
0 4
1 2
1 3
1 5
4 6
*/

Compilation message (stderr)

Catherine.cpp: In function 'int Move(std::vector<int>)':
Catherine.cpp:67:13: warning: unused variable 'tmp' [-Wunused-variable]
   67 |         int tmp = lst;
      |             ^~~

• Subtask 1: 2 / 2
• Subtask 2: 2 / 2
• Subtask 3: 2 / 2
• Subtask 4: 9 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 71
• Subtask 7: 0 / 9