Submission #291665

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
291665	2020-09-05 15:37:34	spdskatr	Village (BOI20_village)	C++14	100 / 100	196 ms	34248 KiB

Village

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <vector>
using namespace std;
int N, dp[100005][2], ans[100005], conn[100005], seen[100005]; // 0 = isolated, 1 = attached
vector<int> graph[100005], g2[100005];
vector<int> broken[100005], unbroken[100005];
vector<int> order;
int sz[100005], ans2[100005];
long long tot;
vector<int> nds;
void dfs(int x, int p) {
  dp[x][1] = 0;
  int mindiff = 2069696969;
  for (int v : graph[x]) {
    if (v != p) {
      dfs(v, x);
      int df = max(0, dp[v][0] + 1 - dp[v][1]);
      if (mindiff > df) {
        mindiff = df;
        conn[x] = v;
      }
      if (dp[v][0] + 1 > dp[v][1]) {
        broken[x].push_back(v);
        dp[x][1] += dp[v][0] + 1;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

Village.cpp: In function 'int main()':
Village.cpp:98:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |    for (int j = 0; j < order.size(); j++) {
      |                    ~~^~~~~~~~~~~~~~
Village.cpp:123:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |   for (int i = 0; i + of < nds.size(); i++) {
      |                   ~~~~~~~^~~~~~~~~~~~
Village.cpp:132:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  132 |   for (int i = 1; i + of < nds.size(); i++) {
      |                   ~~~~~~~^~~~~~~~~~~~
Village.cpp:85:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   85 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
Village.cpp:88:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |   scanf("%d %d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 38 / 38
• Subtask 3: 50 / 50