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Submission #701378

# Submission time Handle Problem Language Result Execution time Memory
701378 2023-02-21T06:09:58 Z Quan2003 Swapping Cities (APIO20_swap) C++17
100 / 100
 396 ms 67768 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 3e5 + 100;
const int INF = 1e7 + 10; 
long long n,m,q,dsz,E;
bool invalid; 
int timer = 1;
vector<int>adj[N + 1];
int fa[N + 1];
bool cyc[N + 1]; 
int up[23][N + 1],dp[N + 1],val[N + 1];
int lf[N + 1],ri[N + 1]; 
int in[N + 1],to[N + 1];
int deg[N + 1],deg1[N + 1],deg3[N + 1];
vector<pair<int,pair<int,int>>>edges; 
int find(int u){
     if(u == fa[u]) return u;
     return fa[u] = find(fa[u]); 
}
void dfs_calc(int u){
    if(!val[u]) val[u] = val[up[0][u]]; 
    for(int i = 1; i < 23 ; i++){
        up[i][u] = up[i - 1][up[i - 1][u]];
    }
    for(int i = 0; i < adj[u].size(); i++){
        int v = adj[u][i]; 
        if(v == up[0][u]) continue;
        dp[v] = dp[up[0][v] = u] + 1;      
        dfs_calc(v);
    }
}
int lca(int a, int b){
    if(dp[a] < dp[b]) swap(a,b);
    int d = dp[a] - dp[b];
    for(int i = 0; i < 23 ; i++){
        if( (d >> i) & 1) a = up[i][a];
    }
    if(a == b) return a;
    for(int i = 22; i >= 0; i--){
         int tA = up[i][a]; int tB = up[i][b];
         if(tA != tB) {
            //cout<<tA<<' '<<tB<<' '<<i<<endl; 
            a = tA; b = tB;
         }
    } 
  //  cout<<a<<' '<<b<<endl; 
    return up[0][a];
} 
void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W){
         for(int i = 0; i < M; i++){ 
              U[i]++; V[i]++; 
              edges.push_back({W[i],{U[i],V[i]}});
             // cout<<U[i]<<' '<<V[i]<<' '<<W[i]<<endl; 
         }
         sort(edges.begin(),edges.end());
         E = N;
         for(int i = 0; i <= N; i++) fa[i] = i;
         for(int i = 0; i < M; i++){
              int u = edges[i].second.first; int v = edges[i].second.second;  
              int x = find(u); int y = find(v);
              deg[u]++; deg[v]++; 
              if(deg[u] == 2) deg1[x]--;  if(deg[v] == 2) deg1[y]--;
              if(deg[u] == 1) deg1[x]++;  if(deg[v] == 1) deg1[y]++;
              if(deg[u] == 3) deg3[x]++;  if(deg[v] == 3) deg3[y]++; 
              E++; 
              if(x == y){
                   fa[x] = fa[E] = E;
                   adj[E].push_back(x);
                   deg1[E] += deg1[x];
                   deg3[E] += deg3[y]; 
              }
              else{
                   if(x < y) swap(x,y); 
                 //  if(i == 1) cout<<deg1[x]<<' '<<deg1[y]<<endl; 
                   fa[x] = fa[y] = fa[E] = E; 
                   deg1[E] += deg1[x] + deg1[y];
                   deg3[E] += deg3[x] + deg3[y]; 
                   adj[E].push_back(x);
                   adj[E].push_back(y); 
              }
              if(!deg1[E] or deg3[E]) val[E] = edges[i].first; 
         }
         //cout<<up[0][9]<<endl; 
         dfs_calc(E);
}
int getMinimumFuelCapacity(int X, int Y){
      int anc = lca(++X,++Y);
   //   cout<<anc<<endl;
      return val[anc] == 0 ? -1 : val[anc];     
}

Compilation message

swap.cpp: In function 'void dfs_calc(int)':
swap.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i = 0; i < adj[u].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~
swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:63:15: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   63 |               if(deg[u] == 2) deg1[x]--;  if(deg[v] == 2) deg1[y]--;
      |               ^~
swap.cpp:63:43: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   63 |               if(deg[u] == 2) deg1[x]--;  if(deg[v] == 2) deg1[y]--;
      |                                           ^~
swap.cpp:64:15: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   64 |               if(deg[u] == 1) deg1[x]++;  if(deg[v] == 1) deg1[y]++;
      |               ^~
swap.cpp:64:43: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   64 |               if(deg[u] == 1) deg1[x]++;  if(deg[v] == 1) deg1[y]++;
      |                                           ^~
swap.cpp:65:15: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   65 |               if(deg[u] == 3) deg3[x]++;  if(deg[v] == 3) deg3[y]++;
      |               ^~
swap.cpp:65:43: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   65 |               if(deg[u] == 3) deg3[x]++;  if(deg[v] == 3) deg3[y]++;
      |                                           ^~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7508 KB Output is correct
2 Correct 4 ms 7508 KB Output is correct
3 Correct 3 ms 7508 KB Output is correct
4 Correct 4 ms 7636 KB Output is correct
5 Correct 7 ms 7764 KB Output is correct
6 Correct 4 ms 7752 KB Output is correct
7 Correct 5 ms 7824 KB Output is correct
8 Correct 6 ms 7764 KB Output is correct
9 Correct 104 ms 29888 KB Output is correct
10 Correct 120 ms 34920 KB Output is correct
11 Correct 119 ms 34488 KB Output is correct
12 Correct 132 ms 36068 KB Output is correct
13 Correct 92 ms 39192 KB Output is correct
14 Correct 121 ms 29964 KB Output is correct
15 Correct 257 ms 36940 KB Output is correct
16 Correct 255 ms 36152 KB Output is correct
17 Correct 269 ms 37760 KB Output is correct
18 Correct 327 ms 40888 KB Output is correct
19 Correct 86 ms 15524 KB Output is correct
20 Correct 256 ms 38192 KB Output is correct
21 Correct 270 ms 37272 KB Output is correct
22 Correct 287 ms 39220 KB Output is correct
23 Correct 316 ms 42392 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7508 KB Output is correct
2 Correct 4 ms 7508 KB Output is correct
3 Correct 281 ms 43448 KB Output is correct
4 Correct 286 ms 48924 KB Output is correct
5 Correct 291 ms 48088 KB Output is correct
6 Correct 293 ms 48932 KB Output is correct
7 Correct 293 ms 48576 KB Output is correct
8 Correct 287 ms 47032 KB Output is correct
9 Correct 289 ms 48228 KB Output is correct
10 Correct 295 ms 46748 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7508 KB Output is correct
2 Correct 4 ms 7508 KB Output is correct
3 Correct 3 ms 7508 KB Output is correct
4 Correct 4 ms 7636 KB Output is correct
5 Correct 7 ms 7764 KB Output is correct
6 Correct 4 ms 7752 KB Output is correct
7 Correct 5 ms 7824 KB Output is correct
8 Correct 6 ms 7764 KB Output is correct
9 Correct 4 ms 7508 KB Output is correct
10 Correct 4 ms 7764 KB Output is correct
11 Correct 5 ms 7764 KB Output is correct
12 Correct 5 ms 7764 KB Output is correct
13 Correct 6 ms 7752 KB Output is correct
14 Correct 5 ms 7752 KB Output is correct
15 Correct 5 ms 7756 KB Output is correct
16 Correct 4 ms 7832 KB Output is correct
17 Correct 4 ms 7764 KB Output is correct
18 Correct 4 ms 7760 KB Output is correct
19 Correct 6 ms 7892 KB Output is correct
20 Correct 5 ms 7716 KB Output is correct
21 Correct 5 ms 7752 KB Output is correct
22 Correct 5 ms 7924 KB Output is correct
23 Correct 4 ms 7760 KB Output is correct
24 Correct 5 ms 8020 KB Output is correct
25 Correct 5 ms 8020 KB Output is correct
26 Correct 5 ms 8020 KB Output is correct
27 Correct 4 ms 7764 KB Output is correct
28 Correct 5 ms 8020 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7508 KB Output is correct
2 Correct 3 ms 7508 KB Output is correct
3 Correct 4 ms 7508 KB Output is correct
4 Correct 3 ms 7508 KB Output is correct
5 Correct 4 ms 7636 KB Output is correct
6 Correct 7 ms 7764 KB Output is correct
7 Correct 4 ms 7752 KB Output is correct
8 Correct 5 ms 7824 KB Output is correct
9 Correct 6 ms 7764 KB Output is correct
10 Correct 104 ms 29888 KB Output is correct
11 Correct 120 ms 34920 KB Output is correct
12 Correct 119 ms 34488 KB Output is correct
13 Correct 132 ms 36068 KB Output is correct
14 Correct 92 ms 39192 KB Output is correct
15 Correct 4 ms 7764 KB Output is correct
16 Correct 5 ms 7764 KB Output is correct
17 Correct 5 ms 7764 KB Output is correct
18 Correct 6 ms 7752 KB Output is correct
19 Correct 5 ms 7752 KB Output is correct
20 Correct 5 ms 7756 KB Output is correct
21 Correct 4 ms 7832 KB Output is correct
22 Correct 4 ms 7764 KB Output is correct
23 Correct 4 ms 7760 KB Output is correct
24 Correct 6 ms 7892 KB Output is correct
25 Correct 5 ms 7716 KB Output is correct
26 Correct 5 ms 7752 KB Output is correct
27 Correct 5 ms 7924 KB Output is correct
28 Correct 4 ms 7760 KB Output is correct
29 Correct 5 ms 8020 KB Output is correct
30 Correct 5 ms 8020 KB Output is correct
31 Correct 5 ms 8020 KB Output is correct
32 Correct 4 ms 7764 KB Output is correct
33 Correct 5 ms 8020 KB Output is correct
34 Correct 15 ms 11668 KB Output is correct
35 Correct 126 ms 37896 KB Output is correct
36 Correct 128 ms 37820 KB Output is correct
37 Correct 131 ms 37812 KB Output is correct
38 Correct 141 ms 37416 KB Output is correct
39 Correct 125 ms 37412 KB Output is correct
40 Correct 116 ms 34752 KB Output is correct
41 Correct 129 ms 38068 KB Output is correct
42 Correct 125 ms 37856 KB Output is correct
43 Correct 95 ms 41920 KB Output is correct
44 Correct 127 ms 38164 KB Output is correct
45 Correct 147 ms 50776 KB Output is correct
46 Correct 135 ms 37896 KB Output is correct
47 Correct 128 ms 38024 KB Output is correct
48 Correct 124 ms 42168 KB Output is correct
49 Correct 99 ms 47972 KB Output is correct
50 Correct 78 ms 39104 KB Output is correct
51 Correct 119 ms 45108 KB Output is correct
52 Correct 177 ms 54148 KB Output is correct
53 Correct 196 ms 57464 KB Output is correct
54 Correct 197 ms 63712 KB Output is correct
55 Correct 93 ms 41576 KB Output is correct
56 Correct 181 ms 58716 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7508 KB Output is correct
2 Correct 4 ms 7508 KB Output is correct
3 Correct 3 ms 7508 KB Output is correct
4 Correct 4 ms 7636 KB Output is correct
5 Correct 7 ms 7764 KB Output is correct
6 Correct 4 ms 7752 KB Output is correct
7 Correct 5 ms 7824 KB Output is correct
8 Correct 6 ms 7764 KB Output is correct
9 Correct 104 ms 29888 KB Output is correct
10 Correct 120 ms 34920 KB Output is correct
11 Correct 119 ms 34488 KB Output is correct
12 Correct 132 ms 36068 KB Output is correct
13 Correct 92 ms 39192 KB Output is correct
14 Correct 121 ms 29964 KB Output is correct
15 Correct 257 ms 36940 KB Output is correct
16 Correct 255 ms 36152 KB Output is correct
17 Correct 269 ms 37760 KB Output is correct
18 Correct 327 ms 40888 KB Output is correct
19 Correct 281 ms 43448 KB Output is correct
20 Correct 286 ms 48924 KB Output is correct
21 Correct 291 ms 48088 KB Output is correct
22 Correct 293 ms 48932 KB Output is correct
23 Correct 293 ms 48576 KB Output is correct
24 Correct 287 ms 47032 KB Output is correct
25 Correct 289 ms 48228 KB Output is correct
26 Correct 295 ms 46748 KB Output is correct
27 Correct 4 ms 7764 KB Output is correct
28 Correct 5 ms 7764 KB Output is correct
29 Correct 5 ms 7764 KB Output is correct
30 Correct 6 ms 7752 KB Output is correct
31 Correct 5 ms 7752 KB Output is correct
32 Correct 5 ms 7756 KB Output is correct
33 Correct 4 ms 7832 KB Output is correct
34 Correct 4 ms 7764 KB Output is correct
35 Correct 4 ms 7760 KB Output is correct
36 Correct 15 ms 11668 KB Output is correct
37 Correct 126 ms 37896 KB Output is correct
38 Correct 128 ms 37820 KB Output is correct
39 Correct 131 ms 37812 KB Output is correct
40 Correct 141 ms 37416 KB Output is correct
41 Correct 125 ms 37412 KB Output is correct
42 Correct 116 ms 34752 KB Output is correct
43 Correct 129 ms 38068 KB Output is correct
44 Correct 125 ms 37856 KB Output is correct
45 Correct 95 ms 41920 KB Output is correct
46 Correct 127 ms 38164 KB Output is correct
47 Correct 21 ms 11796 KB Output is correct
48 Correct 267 ms 42796 KB Output is correct
49 Correct 269 ms 42772 KB Output is correct
50 Correct 258 ms 42660 KB Output is correct
51 Correct 264 ms 42492 KB Output is correct
52 Correct 251 ms 40848 KB Output is correct
53 Correct 207 ms 33612 KB Output is correct
54 Correct 272 ms 43584 KB Output is correct
55 Correct 269 ms 42660 KB Output is correct
56 Correct 318 ms 46116 KB Output is correct
57 Correct 269 ms 43684 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7508 KB Output is correct
2 Correct 3 ms 7508 KB Output is correct
3 Correct 4 ms 7508 KB Output is correct
4 Correct 3 ms 7508 KB Output is correct
5 Correct 4 ms 7636 KB Output is correct
6 Correct 7 ms 7764 KB Output is correct
7 Correct 4 ms 7752 KB Output is correct
8 Correct 5 ms 7824 KB Output is correct
9 Correct 6 ms 7764 KB Output is correct
10 Correct 104 ms 29888 KB Output is correct
11 Correct 120 ms 34920 KB Output is correct
12 Correct 119 ms 34488 KB Output is correct
13 Correct 132 ms 36068 KB Output is correct
14 Correct 92 ms 39192 KB Output is correct
15 Correct 121 ms 29964 KB Output is correct
16 Correct 257 ms 36940 KB Output is correct
17 Correct 255 ms 36152 KB Output is correct
18 Correct 269 ms 37760 KB Output is correct
19 Correct 327 ms 40888 KB Output is correct
20 Correct 281 ms 43448 KB Output is correct
21 Correct 286 ms 48924 KB Output is correct
22 Correct 291 ms 48088 KB Output is correct
23 Correct 293 ms 48932 KB Output is correct
24 Correct 293 ms 48576 KB Output is correct
25 Correct 287 ms 47032 KB Output is correct
26 Correct 289 ms 48228 KB Output is correct
27 Correct 295 ms 46748 KB Output is correct
28 Correct 4 ms 7764 KB Output is correct
29 Correct 5 ms 7764 KB Output is correct
30 Correct 5 ms 7764 KB Output is correct
31 Correct 6 ms 7752 KB Output is correct
32 Correct 5 ms 7752 KB Output is correct
33 Correct 5 ms 7756 KB Output is correct
34 Correct 4 ms 7832 KB Output is correct
35 Correct 4 ms 7764 KB Output is correct
36 Correct 4 ms 7760 KB Output is correct
37 Correct 15 ms 11668 KB Output is correct
38 Correct 126 ms 37896 KB Output is correct
39 Correct 128 ms 37820 KB Output is correct
40 Correct 131 ms 37812 KB Output is correct
41 Correct 141 ms 37416 KB Output is correct
42 Correct 125 ms 37412 KB Output is correct
43 Correct 116 ms 34752 KB Output is correct
44 Correct 129 ms 38068 KB Output is correct
45 Correct 125 ms 37856 KB Output is correct
46 Correct 95 ms 41920 KB Output is correct
47 Correct 127 ms 38164 KB Output is correct
48 Correct 21 ms 11796 KB Output is correct
49 Correct 267 ms 42796 KB Output is correct
50 Correct 269 ms 42772 KB Output is correct
51 Correct 258 ms 42660 KB Output is correct
52 Correct 264 ms 42492 KB Output is correct
53 Correct 251 ms 40848 KB Output is correct
54 Correct 207 ms 33612 KB Output is correct
55 Correct 272 ms 43584 KB Output is correct
56 Correct 269 ms 42660 KB Output is correct
57 Correct 318 ms 46116 KB Output is correct
58 Correct 269 ms 43684 KB Output is correct
59 Correct 86 ms 15524 KB Output is correct
60 Correct 256 ms 38192 KB Output is correct
61 Correct 270 ms 37272 KB Output is correct
62 Correct 287 ms 39220 KB Output is correct
63 Correct 316 ms 42392 KB Output is correct
64 Correct 6 ms 7892 KB Output is correct
65 Correct 5 ms 7716 KB Output is correct
66 Correct 5 ms 7752 KB Output is correct
67 Correct 5 ms 7924 KB Output is correct
68 Correct 4 ms 7760 KB Output is correct
69 Correct 5 ms 8020 KB Output is correct
70 Correct 5 ms 8020 KB Output is correct
71 Correct 5 ms 8020 KB Output is correct
72 Correct 4 ms 7764 KB Output is correct
73 Correct 5 ms 8020 KB Output is correct
74 Correct 147 ms 50776 KB Output is correct
75 Correct 135 ms 37896 KB Output is correct
76 Correct 128 ms 38024 KB Output is correct
77 Correct 124 ms 42168 KB Output is correct
78 Correct 99 ms 47972 KB Output is correct
79 Correct 78 ms 39104 KB Output is correct
80 Correct 119 ms 45108 KB Output is correct
81 Correct 177 ms 54148 KB Output is correct
82 Correct 196 ms 57464 KB Output is correct
83 Correct 197 ms 63712 KB Output is correct
84 Correct 93 ms 41576 KB Output is correct
85 Correct 181 ms 58716 KB Output is correct
86 Correct 84 ms 23544 KB Output is correct
87 Correct 252 ms 42788 KB Output is correct
88 Correct 255 ms 42780 KB Output is correct
89 Correct 297 ms 45636 KB Output is correct
90 Correct 172 ms 54300 KB Output is correct
91 Correct 182 ms 50984 KB Output is correct
92 Correct 278 ms 48600 KB Output is correct
93 Correct 306 ms 58136 KB Output is correct
94 Correct 396 ms 61720 KB Output is correct
95 Correct 343 ms 67768 KB Output is correct
96 Correct 314 ms 46376 KB Output is correct
97 Correct 344 ms 54100 KB Output is correct