oj.uz

Submission #403588

# Submission time Handle Problem Language Result Execution time Memory
403588 2021-05-13T09:50:47 Z Wasrek Swapping Cities (APIO20_swap) C++14
13 / 100
 128 ms 11852 KB 
#include<bits/stdc++.h>
#include "swap.h"
// #include"grader.cpp"
#include <vector>
#define SIZE 100010
#define MAX 2000000000
using namespace std;
struct A{
  int u,w;
  bool operator<(const A & o) const{
    return w<o.w;
  }
};
int n,sub2=1,sub1=1,cycle=1,ma=0,dis[3][SIZE];
A m1={MAX,MAX},m2={MAX,MAX},m3={MAX,MAX};
vector<A> g[SIZE];
struct DIJK{
  int u,w,la,ch;
  // nx node from x,ny node from y,mi min node path that between
  bool operator <(const DIJK & o) const{
    if(w!=o.w) return w>o.w;
    //w==o.w
    return ch<o.ch;
  }
} now;
priority_queue< DIJK > h;
void init(int N, int M, std::vector<int> U, std::vector<int> V, std::vector<int> W) {
    n=N;
    for(int i=0;i<M;i++){
      g[U[i]].push_back({V[i],W[i]});
      g[V[i]].push_back({U[i],W[i]});
      if(W[i]>ma) ma=W[i];
      if(U[i]!=0) sub2=0;
      if(!sub2) continue;
      if(W[i]<m1.w){
        m3=m2,m2=m1,m1={V[i],W[i]};
      }else if(W[i]<m2.w){
        m3=m2,m2={V[i],W[i]};
      }else if(W[i]<m3.w){
        m3={V[i],W[i]};
      }
    }
    if(sub1){
      for(int i=0;i<N;i++){
        if(g[i].size()>2) sub1=0;
        if(g[i].size()<2) cycle=0;
      }
    }
    if(!sub1 && !sub2){
      for(int i=0;i<n;i++){
        sort(g[i].begin(),g[i].end());
      }
    }
    // printf("%d %d\n%d %d\n%d %d\n",m1.u,m1.w,m2.u,m2.w,m3.u,m3.w);
    return ;
}

int subtask2(int X,int Y){
  if(n<=3) return -1;
  if(X!=0 && Y!=0){
    if(X!=m1.u && Y!=m1.u){
      return max(g[X][0].w,max(g[Y][0].w,m1.w));
    }else if(X!=m2.u && Y!=m2.u){
      return max(g[X][0].w,max(g[Y][0].w,m2.w));
    }else if(X!=m3.u && Y!=m3.u){
      return max(g[X][0].w,max(g[Y][0].w,m3.w));
    }
  }else{
    if(Y==0) swap(X,Y);
    //X==0
    if(Y==m1.u || Y==m2.u || Y==m3.u){
      return m3.w;
    }else{
      return max(g[Y][0].w,m2.w);
    }
  }
  return -1;
}

int subtask1(int X,int Y){
  if(cycle) return ma;
  else return -1;
}

int dijkstra(int X,int Y){
  for(int i=0;i<n;i++){
    dis[0][i]=dis[1][i]=MAX;
  }
  if(!h.empty()) h.pop();
  dis[0][X]=0;
  //int u,w,la,ch
  int nw;
  h.push({X,0,-1,1});
  while(!h.empty()){
   now=h.top();
   h.pop();
   for(auto x: g[now.u]){
      if(x.u==now.la) continue;
      nw=max(x.w,now.w);
      if(nw<dis[0][x.u]){
        dis[1][x.u]=dis[0][x.u];
        dis[0][x.u]=nw;
        h.push({x.u,nw,now.u,now.ch});
      }else if(nw<dis[1][x.u]){
        dis[1][x.u]=nw;
        h.push({x.u,nw,now.u,now.ch});
      }
   }
   if(now.ch && now.la!=Y && now.la!=X){
      if(now.w<dis[1][now.la]){
        dis[1][now.la]=now.w;
        h.push({now.la,now.w,now.u,0});
      }
   } 
  }
  int a,b,c;
  a=b=c=MAX;
  if(dis[1][Y]!=MAX)a=max(dis[0][Y],dis[1][Y]);
  if(g[Y].size()>=3)b=max(dis[0][Y],g[Y][2].w);
  if(g[X].size()>=3)c=max(dis[0][Y],g[X][2].w);
  a=min(a,min(b,c));
  if(a==MAX) return -1;
  return a;
}

int getMinimumFuelCapacity(int X, int Y) {
  //min path ที่มี node อยู่ระหว่าง path กับถนนที่เชื่อมกันโหนดตรงกลาง
  //min path 2 path
  //min path + ลูกของ u หรือ v ที่ไม่อยู่ใน path 2 โนหด (u ทั้งคู่ / v ทั้งคู่)
  if(sub2) return subtask2(X,Y);
  else if(sub1) return subtask1(X,Y);
  else return dijkstra(X,Y);
  return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 42 ms 6900 KB Output is correct
10 Correct 52 ms 7880 KB Output is correct
11 Correct 58 ms 7724 KB Output is correct
12 Correct 55 ms 8048 KB Output is correct
13 Correct 60 ms 8048 KB Output is correct
14 Correct 50 ms 7048 KB Output is correct
15 Correct 112 ms 9684 KB Output is correct
16 Correct 116 ms 9548 KB Output is correct
17 Correct 127 ms 9900 KB Output is correct
18 Correct 118 ms 9808 KB Output is correct
19 Correct 66 ms 6984 KB Output is correct
20 Correct 118 ms 10880 KB Output is correct
21 Correct 124 ms 10972 KB Output is correct
22 Correct 119 ms 11224 KB Output is correct
23 Correct 124 ms 11184 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 110 ms 11576 KB Output is correct
4 Correct 117 ms 11620 KB Output is correct
5 Correct 116 ms 11852 KB Output is correct
6 Correct 116 ms 11588 KB Output is correct
7 Correct 121 ms 11840 KB Output is correct
8 Correct 114 ms 11592 KB Output is correct
9 Correct 128 ms 11656 KB Output is correct
10 Correct 116 ms 11588 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct
10 Incorrect 3 ms 2636 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 42 ms 6900 KB Output is correct
11 Correct 52 ms 7880 KB Output is correct
12 Correct 58 ms 7724 KB Output is correct
13 Correct 55 ms 8048 KB Output is correct
14 Correct 60 ms 8048 KB Output is correct
15 Incorrect 3 ms 2636 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 42 ms 6900 KB Output is correct
10 Correct 52 ms 7880 KB Output is correct
11 Correct 58 ms 7724 KB Output is correct
12 Correct 55 ms 8048 KB Output is correct
13 Correct 60 ms 8048 KB Output is correct
14 Correct 50 ms 7048 KB Output is correct
15 Correct 112 ms 9684 KB Output is correct
16 Correct 116 ms 9548 KB Output is correct
17 Correct 127 ms 9900 KB Output is correct
18 Correct 118 ms 9808 KB Output is correct
19 Correct 110 ms 11576 KB Output is correct
20 Correct 117 ms 11620 KB Output is correct
21 Correct 116 ms 11852 KB Output is correct
22 Correct 116 ms 11588 KB Output is correct
23 Correct 121 ms 11840 KB Output is correct
24 Correct 114 ms 11592 KB Output is correct
25 Correct 128 ms 11656 KB Output is correct
26 Correct 116 ms 11588 KB Output is correct
27 Incorrect 3 ms 2636 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 42 ms 6900 KB Output is correct
11 Correct 52 ms 7880 KB Output is correct
12 Correct 58 ms 7724 KB Output is correct
13 Correct 55 ms 8048 KB Output is correct
14 Correct 60 ms 8048 KB Output is correct
15 Correct 50 ms 7048 KB Output is correct
16 Correct 112 ms 9684 KB Output is correct
17 Correct 116 ms 9548 KB Output is correct
18 Correct 127 ms 9900 KB Output is correct
19 Correct 118 ms 9808 KB Output is correct
20 Correct 110 ms 11576 KB Output is correct
21 Correct 117 ms 11620 KB Output is correct
22 Correct 116 ms 11852 KB Output is correct
23 Correct 116 ms 11588 KB Output is correct
24 Correct 121 ms 11840 KB Output is correct
25 Correct 114 ms 11592 KB Output is correct
26 Correct 128 ms 11656 KB Output is correct
27 Correct 116 ms 11588 KB Output is correct
28 Incorrect 3 ms 2636 KB Output isn't correct
29 Halted 0 ms 0 KB -