Submission #416006

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
416006	2021-06-01 19:43:38	nicolaalexandra	Village (BOI20_village)	C++14	100 / 100	151 ms	20420 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 <bits/stdc++.h>
#define DIM 100010
#define INF 2000000000
using namespace std;
vector <int> L[DIM],w[DIM];
int v[DIM],fth[DIM],sp[DIM],f[DIM],viz[DIM];
pair <int,int> d[DIM];
int n,i,x,y,sol_min,k,idx,poz;
long long sol_max;
void dfs (int nod, int tata){
    fth[nod] = tata;
    sp[nod] = 1;
    for (auto vecin : L[nod])
        if (vecin != tata){
            dfs (vecin,nod);
            sp[nod] += sp[vecin];
        }
    if (nod != 1 && v[nod] == nod){
        sol_min += 2;
        swap (v[nod],v[fth[nod]]);
    }
    sol_max += 2 * min (sp[nod],n-sp[nod]);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

Village.cpp: In function 'int main()':
Village.cpp:130:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |         for (int j=0;j<w[d[i].second].size();j++){
      |                      ~^~~~~~~~~~~~~~~~~~~~~~
Village.cpp:101:9: warning: unused variable 'mini' [-Wunused-variable]
  101 |     int mini = n, poz;
      |         ^~~~

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