oj.uz

Submission #979714

# Submission time Handle Problem Language Result Execution time Memory
979714 2024-05-11T10:18:55 Z vjudge1 Swapping Cities (APIO20_swap) C++17
17 / 100
 2000 ms 63420 KB 
#include <time.h>
#include <cstdlib>
#include <stack>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <map>
#include <set>
#include <iterator>
#include <deque>
#include <queue>
#include <sstream>
#include <array>
#include <string>
#include <tuple>
#include <chrono>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <list>
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <bitset>


#include "swap.h"

#include <cassert>
#include <cstdio>


using namespace std;
vector<int> g[200005];
pair<int, int> p[200005];
map<pair<int, int>, int> mp, pos;
set<pair<int, int>> st;
int x, y, mx;
bool ok = 0;
vector<int> A, B, C;
bool us[200005];

void init(int N, int M,
          std::vector<int> U, std::vector<int> V, std::vector<int> W) {
      x = N;
      y = M;
      if(x - 1 != y) ok = 1;
      for(int i = 0; i < M; i++){
          int a = U[i] + 1, b = V[i] + 1, c = W[i];
          if(a != 1) ok = 1;
          mp[{a, b}] = c;
          mp[{b, a}] = c;

          pos[{a, b}] = i + 1;
          pos[{b, a}] = i + 1; 

          st.insert({c, i + 1});
          A.push_back(a);
          B.push_back(b);
          C.push_back(c);
      }
      
}
int kol = 0, kol1 = 0;
int dist[200005];
map<pair<int, int>, int> edge;
void dfs(int k){
  us[k] = 1;
  kol++;
  for(int to : g[k]){
    if(edge[{k, to}] == 0){
      edge[{k, to}]++;
      edge[{to, k}]++;
      kol1++;
    }
    if(us[to]) continue;
    dfs(to);
  }
}
int getMinimumFuelCapacity(int X, int Y) {
  if(x - 1 == y){
      for(int i = 1; i <= x; i++) g[i].clear();
      for(int i = 0; i < y; i++){
          g[A[i]].push_back(B[i]);
             g[B[i]].push_back(A[i]);
      }
      bool f = 0;
      for(int i = 1; i <= x; i++)
        if(int(g[i].size()) >= 3) f = 1;
      if(!f) return -1;
  }
  if(x == y){
      for(int i = 1; i <= x; i++) g[i].clear();
      for(int i = 0; i < y; i++){
          g[A[i]].push_back(B[i]);
          g[B[i]].push_back(A[i]);
      }
      bool f = 0;
      for(int i = 1; i <= x; i++)
        if(int(g[i].size()) != 2) f = 1;
      if(!f) return st.rbegin()->first;
  }
  if(ok){
      X++;
      Y++;
      int L = 0, R = 1e9 + 1;
      while(L + 1 < R){
        int mid = (L + R) / 2;
        kol = 0;
        for(int i = 0; i <= x; i++){
          g[i].clear();
          us[i] = 0;
        }
        for(int i = 0; i < y; i++){
            if(C[i] <= mid){
              g[A[i]].push_back(B[i]);
              g[B[i]].push_back(A[i]);
            }
        }
        int kk = 0;
        edge.clear();
        kol1 = kol = 0;
        dfs(X);
        for(int i = 1; i <= x; i++)
          if(us[i] == 1 && g[i].size() >= 3) kk++;
        if(!us[Y]){
          L = mid;
          continue;
        }
        if(kol - 1 == kol1 && kk == 0){
          L = mid;
          continue;
        }
        R = mid;
        continue;
      }
      if(R == 1000000001) return -1;
      return R;
  }
  else{
    X++;
    Y++;
    if(x <= 3)
        return -1;
    int mx = 0;
    if(X != 1) mx = mp[{1, X}];
    if(Y != 1) mx = max(mx, mp[{1, Y}]);


    if(X != 1) st.erase({mp[{1, X}], pos[{1, X}]});
    if(Y != 1) st.erase({mp[{1, Y}], pos[{1, Y}]});
    
    pair<int, int> p = *st.begin();
    st.erase(st.begin());
    if(X != 1 && Y != 1){
        st.insert(p);
        if(X != 1) st.insert({mp[{1, X}], pos[{1, X}]});
        if(Y != 1) st.insert({mp[{1, Y}], pos[{1, Y}]});
        return max(mx, p.first);
    }
    else{
        pair<int, int> p1 = *st.begin();
        st.insert(p1);
        st.insert(p);
        if(X != 1) st.insert({mp[{1, X}], pos[{1, X}]});
        if(Y != 1) st.insert({mp[{1, Y}], pos[{1, Y}]});
        return max({mx, p.first, p1.first});
    }
  }
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Correct 2 ms 7256 KB Output is correct
4 Correct 2 ms 7768 KB Output is correct
5 Correct 3 ms 7844 KB Output is correct
6 Correct 3 ms 7768 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 199 ms 35144 KB Output is correct
10 Correct 279 ms 41172 KB Output is correct
11 Correct 268 ms 40764 KB Output is correct
12 Correct 327 ms 42736 KB Output is correct
13 Correct 270 ms 42660 KB Output is correct
14 Execution timed out 2064 ms 35248 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Execution timed out 2009 ms 43232 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Correct 2 ms 7256 KB Output is correct
4 Correct 2 ms 7768 KB Output is correct
5 Correct 3 ms 7844 KB Output is correct
6 Correct 3 ms 7768 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 2 ms 7516 KB Output is correct
10 Correct 22 ms 7988 KB Output is correct
11 Correct 42 ms 8028 KB Output is correct
12 Correct 44 ms 7772 KB Output is correct
13 Correct 38 ms 7896 KB Output is correct
14 Correct 27 ms 7768 KB Output is correct
15 Correct 25 ms 7996 KB Output is correct
16 Correct 45 ms 8028 KB Output is correct
17 Correct 40 ms 8024 KB Output is correct
18 Correct 35 ms 7996 KB Output is correct
19 Correct 23 ms 7980 KB Output is correct
20 Correct 47 ms 8024 KB Output is correct
21 Correct 51 ms 8028 KB Output is correct
22 Correct 16 ms 8028 KB Output is correct
23 Correct 26 ms 7768 KB Output is correct
24 Correct 21 ms 8284 KB Output is correct
25 Correct 32 ms 8284 KB Output is correct
26 Correct 64 ms 8532 KB Output is correct
27 Correct 34 ms 8028 KB Output is correct
28 Correct 31 ms 8284 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 2 ms 7512 KB Output is correct
3 Correct 2 ms 7260 KB Output is correct
4 Correct 2 ms 7256 KB Output is correct
5 Correct 2 ms 7768 KB Output is correct
6 Correct 3 ms 7844 KB Output is correct
7 Correct 3 ms 7768 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 199 ms 35144 KB Output is correct
11 Correct 279 ms 41172 KB Output is correct
12 Correct 268 ms 40764 KB Output is correct
13 Correct 327 ms 42736 KB Output is correct
14 Correct 270 ms 42660 KB Output is correct
15 Correct 22 ms 7988 KB Output is correct
16 Correct 42 ms 8028 KB Output is correct
17 Correct 44 ms 7772 KB Output is correct
18 Correct 38 ms 7896 KB Output is correct
19 Correct 27 ms 7768 KB Output is correct
20 Correct 25 ms 7996 KB Output is correct
21 Correct 45 ms 8028 KB Output is correct
22 Correct 40 ms 8024 KB Output is correct
23 Correct 35 ms 7996 KB Output is correct
24 Correct 23 ms 7980 KB Output is correct
25 Correct 47 ms 8024 KB Output is correct
26 Correct 51 ms 8028 KB Output is correct
27 Correct 16 ms 8028 KB Output is correct
28 Correct 26 ms 7768 KB Output is correct
29 Correct 21 ms 8284 KB Output is correct
30 Correct 32 ms 8284 KB Output is correct
31 Correct 64 ms 8532 KB Output is correct
32 Correct 34 ms 8028 KB Output is correct
33 Correct 31 ms 8284 KB Output is correct
34 Correct 159 ms 13872 KB Output is correct
35 Execution timed out 2043 ms 63420 KB Time limit exceeded
36 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Correct 2 ms 7256 KB Output is correct
4 Correct 2 ms 7768 KB Output is correct
5 Correct 3 ms 7844 KB Output is correct
6 Correct 3 ms 7768 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 199 ms 35144 KB Output is correct
10 Correct 279 ms 41172 KB Output is correct
11 Correct 268 ms 40764 KB Output is correct
12 Correct 327 ms 42736 KB Output is correct
13 Correct 270 ms 42660 KB Output is correct
14 Execution timed out 2064 ms 35248 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 2 ms 7512 KB Output is correct
3 Correct 2 ms 7260 KB Output is correct
4 Correct 2 ms 7256 KB Output is correct
5 Correct 2 ms 7768 KB Output is correct
6 Correct 3 ms 7844 KB Output is correct
7 Correct 3 ms 7768 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 199 ms 35144 KB Output is correct
11 Correct 279 ms 41172 KB Output is correct
12 Correct 268 ms 40764 KB Output is correct
13 Correct 327 ms 42736 KB Output is correct
14 Correct 270 ms 42660 KB Output is correct
15 Execution timed out 2064 ms 35248 KB Time limit exceeded
16 Halted 0 ms 0 KB -