Submission #1096171

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1096171	2024-10-04 03:45:46	Sunbae	Putovanje (COCI20_putovanje)	C++17	0 / 110	1062 ms	18772 KiB

putovanje

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int N = 2e5 + 5;
tuple<int,int,int,int> E[N];
vector<int> g[N];
int sz[N], up[N], dep[N], pos[N], idx[N], top[N], s[N<<2], ti, L, R, n;
void init(int ind, int low, int high){
  if(low == high){ idx[low] = ind; return;}
  int mid = low + ((high-low)>>1);
  init(ind<<1, low, mid); init(ind<<1|1, mid+1, high);
}
void upd(int ind, int low, int high){
  if(low > R || high < L) return;
  if(L <= low && high <= R){ ++s[ind]; return;}
  int mid = low + ((high-low)>>1);
  upd(ind<<1, low, mid); upd(ind<<1|1, mid+1, high);
}
void dfs(int u){
  sz[u] = 1;
  for(int& v: g[u]){
    g[v].erase(find(g[v].begin(), g[v].end(), up[v] = u));
    dep[v] = dep[u] + 1; dfs(v); sz[u] += sz[v];
    if(sz[v] > sz[g[u][0]]) swap(v, g[u][0]);
  }
}
void efs(int u){
  pos[u] = ti++;
  for(int v: g[u]){
    top[v] = (u == g[u][0]) ? top[u] : v;
 
 
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Compilation message (stderr)

putovanje.cpp: In function 'int main()':
putovanje.cpp:45:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
putovanje.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   scanf("%d %d %d %d", &u, &v, w, w+1); --u; --v;
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 25
• Subtask 3: 0 / 65