Submission #1096191

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1096191	2024-10-04 04:43:11	Sunbae	Putovanje (COCI20_putovanje)	C++17	110 / 110	50 ms	41412 KiB

putovanje

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int N = 2e5 + 5, M = 4e5 + 5;
vector<int> g[N];
tuple<int,int,int,int> e[N];
int E[M], T[M], mn[N], ST[M][20], m;
ll d[N];
void dfs(int u){
  E[m++] = u;
  for(int v: g[u]){
    g[v].erase(find(g[v].begin(), g[v].end(), u));
    dfs(v); E[m++] = u;
  }
}
int get_lca(int u, int v){
  if(mn[u] > mn[v]) swap(u, v);
  int j = 31 - __builtin_clz(mn[v] - mn[u] + 1);
  return T[min(ST[mn[u]][j], ST[mn[v]-(1<<j)+1][j])];
}
void efs(int u){
  for(int v: g[u]) efs(v), d[u] += d[v];
}
signed main(){
  int n; scanf("%d", &n);
  for(int i = 0, u, v, w[2]; i<n-1; ++i){
    scanf("%d %d %d %d", &u, &v, w, w+1); --u; --v;
    g[u].push_back(v); g[v].push_back(u);
    e[i] = {u, v, w[0], w[1]};
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

putovanje.cpp: In function 'int main()':
putovanje.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
putovanje.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%d %d %d %d", &u, &v, w, w+1); --u; --v;
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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