Submission #252029

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
252029	2020-07-23 19:21:43	Bruteforceman	Capital City (JOI20_capital_city)	C++11	100 / 100	1720 ms	56820 KiB

capital_city

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#include "bits/stdc++.h"
using namespace std;
using pii = pair <int, int>;
vector <int> v[200005];
vector <int> g[200005];
int c[200005];
int disc[200005], fin[200005], dep[200005];
int anc[20][200010];
const int logn = 19;
int cur;
bool del[200005];
int n, k;
int lca(int x, int y) {
  if(dep[x] > dep[y]) {
    swap(x, y);
  }
  for(int i = logn; i >= 0; i--) {
    if(dep[y] - (1 << i) >= dep[x]) {
      y = anc[i][y];
    }
  }
  if(x == y) return x;
  for(int i = logn; i >= 0; i--) {
    if(anc[i][x] != anc[i][y]) {
      x = anc[i][x];
      y = anc[i][y];
    }
  }
 
 
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Compilation message (stderr)

capital_city.cpp: In function 'int solve(int)':
capital_city.cpp:75:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 1; i < v[x].size(); i++) {
                  ~~^~~~~~~~~~~~~
capital_city.cpp: In function 'int main(int, const char**)':
capital_city.cpp:174:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
capital_city.cpp:177:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p, &q);
   ~~~~~^~~~~~~~~~~~~~~~~
capital_city.cpp:182:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &c[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30
• Subtask 4: 59 / 59