제출 #235308

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
235308	2020-05-27 16:25:28	ArshiaDadras	Zagrade (COI17_zagrade)	C++14	100 / 100	382 ms	119548 KiB

zagrade

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/* In the name of Allah */
#include<bits/stdc++.h>
using namespace std;
const int N = 3e5 + 5;
map<int, int> mp1[N], mp2[N];
int n, cost1[N], cost2[N];
vector<int> adj[N];
long long ans;
void Swap(int u, int v) {
  swap(mp1[u], mp1[v]);
  swap(mp2[u], mp2[v]);
  swap(cost1[u], cost1[v]);
  swap(cost2[u], cost2[v]);
}
void dfs(int u, int par) {
  int cost = cost1[u];
  for (auto v: adj[u])
    if (v ^ par) {
      dfs(v, u);
      bool rev = mp1[u].size() + mp2[u].size() < mp1[v].size() + mp2[v].size();
      if (rev)
        Swap(u, v);
      for (auto [x, k]: mp1[v])
        if (mp2[u].count(x + cost1[v] - cost2[u]))
          ans += 1LL * k * mp2[u][x + cost1[v] - cost2[u]];
      for (auto [x, k]: mp2[v])
        if (mp1[u].count(x + cost2[v] - cost1[u]))
 
 
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컴파일 시 표준 에러 (stderr) 메시지

zagrade.cpp: In function 'void dfs(int, int)':
zagrade.cpp:26:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
    for (auto [x, k]: mp1[v])
              ^
zagrade.cpp:29:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
    for (auto [x, k]: mp2[v])
              ^
zagrade.cpp:39:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
    for (auto [x, k]: mp1[v])
              ^
zagrade.cpp:41:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
    for (auto [x, k]: mp2[v])
              ^

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 60 / 60