Submission #104791

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
104791	2019-04-09 09:22:33	IOrtroiii	Designated Cities (JOI19_designated_cities)	C++14	100 / 100	735 ms	57172 KiB

designated_cities

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#include <bits/stdc++.h>
using namespace std;
const int N = 200200;
vector< tuple<int, int, int> > g[N];
long long md[N];
long long sm[N];
long long up[N];
void dfs_down(int u,int p) {
  for (auto e : g[u]) {
    int v, wf, wb;
    tie(v, wf, wb) = e;
    if (v == p) continue;
    dfs_down(v, u);
    md[u] = max(md[u], md[v] + wf);
    sm[u] += wf + sm[v];
  }
}
void dfs_up(int u,int p) {
  md[u] = max(md[u], up[u]);
  pair<long long, long long> mx(up[u], 0);
  for (auto e : g[u]) {
    int v, wf, wb;
    tie(v, wf, wb) = e;
    if (v == p) continue;
    long long nw = md[v] + wf;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:112:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
designated_cities.cpp:115:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d %d", &u, &v, &x, &y);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:141:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &q);
   ~~~~~^~~~~~~~~~
designated_cities.cpp:144:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &v);
     ~~~~~^~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 9 / 9
• Subtask 4: 17 / 17
• Subtask 5: 17 / 17
• Subtask 6: 44 / 44