Submission #745135

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
745135	2023-05-19 12:31:08	b00norp	Duathlon (APIO18_duathlon)	C++14	66 / 100	282 ms	36004 KiB

count_triplets

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#include <bits/stdc++.h>
using namespace std;
#define int long long
mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());
/*
- Make a bridge tree of the graph
- Store all the sizes of the nodes in bridge tree
- Case 1: 
All 3 nodes in the same node (all s, c, f)
(siz) * (siz - 1) * (siz - 2)
- Case 2: 2 nodes in the same node. 1 node away (s, c) or (c, f)
s / f cannot be the node that joins the bridge node and the away node
=> -1 candidate for f, same candidates for c
=> [[(component_siz - siz) * (siz - 1) * (siz - 1)]] * 2 (for the 2 options)
- Case 3: 1 node here, 2 nodes in different subtrees (c)
=> if bridge is from same node, only that node can be c
=> else, siz options
*/
const int INF = 1e18;
const int N = 1e5 + 5;
 
 
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Compilation message (stderr)

count_triplets.cpp: In function 'long long int FindSiz(long long int)':
count_triplets.cpp:87:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   87 |  for(auto [to, temp]: bcc[node])
      |           ^
count_triplets.cpp: In function 'void UpdateSiz(long long int, long long int)':
count_triplets.cpp:99:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   99 |  for(auto [to, temp]: bcc[node])
      |           ^
count_triplets.cpp: In function 'void Solve()':
count_triplets.cpp:139:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  139 |  for(auto [u, v]: bridges)
      |           ^
count_triplets.cpp:183:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  183 |   for(auto [to, connector]: bcc[i])
      |            ^
count_triplets.cpp:197:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  197 |   for(auto [to, connector]: bcc[i])
      |            ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 11
• Subtask 3: 8 / 8
• Subtask 4: 10 / 10
• Subtask 5: 13 / 13
• Subtask 6: 15 / 15
• Subtask 7: 20 / 20
• Subtask 8: 0 / 8
• Subtask 9: 0 / 10