Submission #1052699

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1052699	2024-08-10 19:37:08	_rain_	Roadside Advertisements (NOI17_roadsideadverts)	C++14	100 / 100	49 ms	13944 KiB

roadsideadverts

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#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
const int maxn = 1e5;
const int maxlog = 16;
vector<pair<int,int>> g[maxn+2];
int sta[maxn+2] , fin[maxn+2] , timedfs = 0 , n;
int par[maxn+2][maxlog+2] , h[maxn+2] , v[maxn+2] ;
i64 d[maxn+2];
  void dfs(int u , int p)
  {
    sta[u] = ++timedfs;
    h[u] = h[p]+1;
    par[u][0] = p;
    for (int i = 1; i <= maxlog; ++i)
      par[u][i] = par[par[u][i - 1]][i - 1];
    for (auto& v : g[u])
      if(v.first != p)
      {
        d[v.first] = d[u] + v.second;
        dfs(v.first , u);
      }
    fin[u] = timedfs;
    return;
  }
  int LCA(int u , int v)
  {
    if (h[u] < h[v]) swap(u,v);
 
 
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Compilation message (stderr)

roadsideadverts.cpp: In function 'int main()':
roadsideadverts.cpp:84:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |   for (int i = 1; i < vert.size(); ++i)
      |                   ~~^~~~~~~~~~~~~
roadsideadverts.cpp:57:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |   freopen(name".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
roadsideadverts.cpp:58:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |   freopen(name".out","w+",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 23 / 23
• Subtask 3: 40 / 40
• Subtask 4: 30 / 30