oj.uz

Submission #418828

# Submission time Handle Problem Language Result Execution time Memory
418828 2021-06-06T01:26:45 Z ly20 Village (BOI20_village) C++17
100 / 100
 132 ms 20492 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 112345;
vector <int> grafo[MAXN];
long long mn, mx;
int rmn[MAXN], rmx[MAXN];
int cur[MAXN];
int grau[MAXN];
int marc[MAXN];
int dist[MAXN];
int sub[MAXN];
int n;
vector <int> cmp[MAXN];
int cm;
void dfs(int v, int p) {
    sub[v] = 1;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        dfs(viz, v);
        sub[v] += sub[viz];
    }
    mx += min(sub[v], n - sub[v]);
    //printf("%d\n", sub[v]);
}
int dfs2(int v, int p) {
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        if(sub[viz] > n / 2) return dfs2(viz, v);
    }
    return v;
}
void dfs3(int v, int p) {
    cmp[cm].push_back(v);
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        dfs3(viz, v);
    }
}
int main() {
    scanf("%d", &n);
    for(int i = 0; i < n - 1; i++) {
        int a, b;
        scanf("%d %d", &a, &b);
        grafo[a].push_back(b);
        grafo[b].push_back(a);
        grau[a]++; grau[b]++;
    }
    queue <int> fila;
    for(int i = 1; i <= n; i++) {
            rmn[i] = i; rmx[i] = i;
        if(grau[i] == 1) fila.push(i);
    }
    while(!fila.empty()) {
        int cur = fila.front(); fila.pop();
        marc[cur] = 1;
        int p = grafo[cur][0];
        for(int i = 0 ;i < grafo[cur].size(); i++) {
            int viz = grafo[cur][i];
            grau[viz]--;
            if(grau[viz] == 1) fila.push(viz);
            if(marc[viz] == 0) p = viz;
        }
        if(rmn[cur] == cur) {
            swap(rmn[cur], rmn[p]);
            mn += 2;
        }
    }
    dfs(1, 1);
    int cn = dfs2(1, 1);
    for(int i = 0; i < grafo[cn].size(); i++) {
        dfs3(grafo[cn][i], cn);
        cm++;
    }
    int mt = 1123456789;
    int id = 0;
    for(int i = 0; i < cm; i++) {
        if(cmp[i].size() < mt) {
            mt = cmp[i].size();
            id = i;
        }
    }
    if(n % 2 == 0) cmp[id].push_back(cn);
    vector <int> temp;
    for(int i = 0; i < cm; i++) {
        for(int j = 0; j < cmp[i].size(); j++) temp.push_back(cmp[i][j]);
    }
    for(int i = 0; i < temp.size() / 2; i++) {
        int pr = i + temp.size() / 2;
        swap(rmx[temp[i]], rmx[temp[pr]]);
    }
    if(n % 2 == 1) swap(rmx[temp[0]], rmx[cn]);
    printf("%lld %lld\n", mn, mx * 2);
    for(int i = 1; i <= n; i++) {
        printf("%d ", rmn[i]);
    }
    printf("\n");
    for(int i = 1; i <= n; i++) {
        printf("%d ", rmx[i]);
    }
    printf("\n");
    return 0;
}

Compilation message

Village.cpp: In function 'void dfs(int, int)':
Village.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'int dfs2(int, int)':
Village.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'void dfs3(int, int)':
Village.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'int main()':
Village.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for(int i = 0 ;i < grafo[cur].size(); i++) {
      |                        ~~^~~~~~~~~~~~~~~~~~~
Village.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i = 0; i < grafo[cn].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~~
Village.cpp:80:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   80 |         if(cmp[i].size() < mt) {
      |            ~~~~~~~~~~~~~~^~~~
Village.cpp:88:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |         for(int j = 0; j < cmp[i].size(); j++) temp.push_back(cmp[i][j]);
      |                        ~~^~~~~~~~~~~~~~~
Village.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |     for(int i = 0; i < temp.size() / 2; i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Village.cpp:46:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         scanf("%d %d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5580 KB Output is correct
2 Correct 3 ms 5580 KB Output is correct
3 Correct 3 ms 5580 KB Output is correct
4 Correct 3 ms 5580 KB Output is correct
5 Correct 3 ms 5580 KB Output is correct
6 Correct 5 ms 5580 KB Output is correct
7 Correct 4 ms 5580 KB Output is correct
8 Correct 4 ms 5580 KB Output is correct
9 Correct 4 ms 5580 KB Output is correct
10 Correct 4 ms 5580 KB Output is correct
11 Correct 3 ms 5576 KB Output is correct
12 Correct 3 ms 5580 KB Output is correct
13 Correct 3 ms 5580 KB Output is correct
14 Correct 3 ms 5580 KB Output is correct
15 Correct 3 ms 5576 KB Output is correct
16 Correct 4 ms 5580 KB Output is correct
17 Correct 4 ms 5576 KB Output is correct

Subtask #2
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5580 KB Output is correct
2 Correct 4 ms 5580 KB Output is correct
3 Correct 4 ms 5580 KB Output is correct
4 Correct 4 ms 5584 KB Output is correct
5 Correct 4 ms 5584 KB Output is correct
6 Correct 5 ms 5588 KB Output is correct
7 Correct 4 ms 5708 KB Output is correct
8 Correct 4 ms 5580 KB Output is correct
9 Correct 4 ms 5572 KB Output is correct
10 Correct 5 ms 5580 KB Output is correct
11 Correct 4 ms 5580 KB Output is correct
12 Correct 4 ms 5716 KB Output is correct
13 Correct 4 ms 5588 KB Output is correct
14 Correct 4 ms 5584 KB Output is correct
15 Correct 4 ms 5580 KB Output is correct
16 Correct 4 ms 5588 KB Output is correct
17 Correct 4 ms 5580 KB Output is correct
18 Correct 4 ms 5580 KB Output is correct
19 Correct 4 ms 5580 KB Output is correct
20 Correct 4 ms 5580 KB Output is correct
21 Correct 4 ms 5580 KB Output is correct
22 Correct 4 ms 5584 KB Output is correct
23 Correct 4 ms 5580 KB Output is correct
24 Correct 4 ms 5580 KB Output is correct
25 Correct 4 ms 5576 KB Output is correct
26 Correct 5 ms 5580 KB Output is correct
27 Correct 4 ms 5580 KB Output is correct
28 Correct 4 ms 5576 KB Output is correct
29 Correct 6 ms 5580 KB Output is correct
30 Correct 5 ms 5580 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5580 KB Output is correct
2 Correct 3 ms 5580 KB Output is correct
3 Correct 3 ms 5580 KB Output is correct
4 Correct 3 ms 5580 KB Output is correct
5 Correct 3 ms 5580 KB Output is correct
6 Correct 5 ms 5580 KB Output is correct
7 Correct 4 ms 5580 KB Output is correct
8 Correct 4 ms 5580 KB Output is correct
9 Correct 4 ms 5580 KB Output is correct
10 Correct 4 ms 5580 KB Output is correct
11 Correct 3 ms 5576 KB Output is correct
12 Correct 3 ms 5580 KB Output is correct
13 Correct 3 ms 5580 KB Output is correct
14 Correct 3 ms 5580 KB Output is correct
15 Correct 3 ms 5576 KB Output is correct
16 Correct 4 ms 5580 KB Output is correct
17 Correct 4 ms 5576 KB Output is correct
18 Correct 4 ms 5580 KB Output is correct
19 Correct 4 ms 5580 KB Output is correct
20 Correct 4 ms 5580 KB Output is correct
21 Correct 4 ms 5584 KB Output is correct
22 Correct 4 ms 5584 KB Output is correct
23 Correct 5 ms 5588 KB Output is correct
24 Correct 4 ms 5708 KB Output is correct
25 Correct 4 ms 5580 KB Output is correct
26 Correct 4 ms 5572 KB Output is correct
27 Correct 5 ms 5580 KB Output is correct
28 Correct 4 ms 5580 KB Output is correct
29 Correct 4 ms 5716 KB Output is correct
30 Correct 4 ms 5588 KB Output is correct
31 Correct 4 ms 5584 KB Output is correct
32 Correct 4 ms 5580 KB Output is correct
33 Correct 4 ms 5588 KB Output is correct
34 Correct 4 ms 5580 KB Output is correct
35 Correct 4 ms 5580 KB Output is correct
36 Correct 4 ms 5580 KB Output is correct
37 Correct 4 ms 5580 KB Output is correct
38 Correct 4 ms 5580 KB Output is correct
39 Correct 4 ms 5584 KB Output is correct
40 Correct 4 ms 5580 KB Output is correct
41 Correct 4 ms 5580 KB Output is correct
42 Correct 4 ms 5576 KB Output is correct
43 Correct 5 ms 5580 KB Output is correct
44 Correct 4 ms 5580 KB Output is correct
45 Correct 4 ms 5576 KB Output is correct
46 Correct 6 ms 5580 KB Output is correct
47 Correct 5 ms 5580 KB Output is correct
48 Correct 88 ms 12448 KB Output is correct
49 Correct 114 ms 13232 KB Output is correct
50 Correct 100 ms 13264 KB Output is correct
51 Correct 71 ms 11632 KB Output is correct
52 Correct 125 ms 13116 KB Output is correct
53 Correct 86 ms 12428 KB Output is correct
54 Correct 52 ms 12872 KB Output is correct
55 Correct 115 ms 20492 KB Output is correct
56 Correct 112 ms 16600 KB Output is correct
57 Correct 108 ms 15420 KB Output is correct
58 Correct 107 ms 14396 KB Output is correct
59 Correct 99 ms 13372 KB Output is correct
60 Correct 93 ms 16172 KB Output is correct
61 Correct 79 ms 14040 KB Output is correct
62 Correct 90 ms 13720 KB Output is correct
63 Correct 85 ms 13308 KB Output is correct
64 Correct 88 ms 13472 KB Output is correct
65 Correct 118 ms 13692 KB Output is correct
66 Correct 77 ms 13212 KB Output is correct
67 Correct 67 ms 11812 KB Output is correct
68 Correct 75 ms 12412 KB Output is correct
69 Correct 88 ms 13664 KB Output is correct
70 Correct 95 ms 13172 KB Output is correct
71 Correct 66 ms 11276 KB Output is correct
72 Correct 65 ms 11984 KB Output is correct
73 Correct 97 ms 13880 KB Output is correct
74 Correct 78 ms 12988 KB Output is correct
75 Correct 132 ms 13152 KB Output is correct
76 Correct 93 ms 13132 KB Output is correct
77 Correct 89 ms 13248 KB Output is correct
78 Correct 61 ms 10764 KB Output is correct
79 Correct 67 ms 11580 KB Output is correct
80 Correct 97 ms 13116 KB Output is correct
81 Correct 107 ms 13456 KB Output is correct
82 Correct 95 ms 13268 KB Output is correct