oj.uz

Submission #790113

# Submission time Handle Problem Language Result Execution time Memory
790113 2023-07-22T10:43:20 Z Lyrically Duathlon (APIO18_duathlon) C++17
8 / 100
 51 ms 11984 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define pb push_back
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
int read(){int x;scanf("%lld",&x);return x;}
void print(int x){printf("%lld\n",x);}
void file(string s)
{
	freopen((s+".in").c_str(),"r",stdin);
	freopen((s+".out").c_str(),"w",stdout);
}
const int mod=998244353;
int n,m;
vector<int> edge[100005];
int deg[100005];
int Fa[100005];
vector<int> Set[100005];
int E[100005];
int Find(int x){return Fa[x]==x?x:Fa[x]=Find(Fa[x]);}
void work()
{
	rep1(i,n)
	{
		Set[Find(i)].pb(i);
	}
	rep1(i,n)
	{
		for(auto v:edge[i])
		{
			if(i>=v){continue;}
			E[Find(i)]++;
		}
	}
	int res=0;
	rep1(i,n)
	{
		if(!Set[i].empty())
		{
			if(E[i]==Set[i].size())
			{
				res+=E[i]*(E[i]-1)*(E[i]-2);
			}
			else
			{
				res+=(E[i]+1)*E[i]*(E[i]-1)/3;
			}
		}
	}
	print(res);
}
signed main()
{
	n=read(),m=read();rep1(i,n){Fa[i]=i;}
	rep1(i,m)
	{
		int u=read(),v=read();Fa[Find(u)]=Find(v);
		edge[u].pb(v),edge[v].pb(u);
		deg[u]++,deg[v]++;
	}
	bool f=1;
	rep1(i,n){f&=(deg[i]<=2);}
	if(f){work();return 0;}
	return 0;
}

Compilation message

count_triplets.cpp: In function 'void work()':
count_triplets.cpp:42:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |    if(E[i]==Set[i].size())
      |       ~~~~^~~~~~~~~~~~~~~
count_triplets.cpp: In function 'long long int read()':
count_triplets.cpp:8:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 | int read(){int x;scanf("%lld",&x);return x;}
      |                  ~~~~~^~~~~~~~~~~
count_triplets.cpp: In function 'void file(std::string)':
count_triplets.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((s+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
count_triplets.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((s+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 10824 KB Output is correct
2 Correct 37 ms 10808 KB Output is correct
3 Correct 33 ms 10624 KB Output is correct
4 Correct 33 ms 11076 KB Output is correct
5 Correct 33 ms 10812 KB Output is correct
6 Correct 32 ms 10776 KB Output is correct
7 Correct 51 ms 10588 KB Output is correct
8 Correct 36 ms 10808 KB Output is correct
9 Correct 34 ms 10924 KB Output is correct
10 Correct 45 ms 10780 KB Output is correct
11 Correct 37 ms 11956 KB Output is correct
12 Correct 40 ms 11852 KB Output is correct
13 Correct 34 ms 11984 KB Output is correct
14 Correct 34 ms 11764 KB Output is correct
15 Correct 31 ms 11708 KB Output is correct
16 Correct 27 ms 11508 KB Output is correct
17 Correct 8 ms 9996 KB Output is correct
18 Correct 7 ms 10088 KB Output is correct
19 Correct 7 ms 9812 KB Output is correct
20 Correct 7 ms 9940 KB Output is correct
21 Correct 7 ms 9716 KB Output is correct
22 Correct 9 ms 9684 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 4948 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 36 ms 10280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 4948 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 33 ms 10184 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4960 KB Output isn't correct
2 Halted 0 ms 0 KB -