Submission #1574861


Source Code Expand

#include<cstdio>
#include<iostream>
using namespace std;
const int N=100010;
struct tyc{
	int to,next;
}e[4*N];
int head[N],n,m,size;
int x,y;
int oh,si,oth;
long long ans;
bool p=0;
bool vis[N],color[N];
void add(int x,int y)
{
	size++;
	e[size].to=y;
	e[size].next=head[x];
	head[x]=size;
}
void dfs(int x,int fa)
{
	//cout<<x<<endl;
	vis[x]=1;
	color[x]=color[fa]^1;
	for (int i=head[x];i;i=e[i].next)
	{
		int y=e[i].to;
		if (y!=fa)
		{
			if (vis[y])
			{
				if (color[x]==color[y]) p=1;
				return;
			}
			else dfs(y,x);
		}
	}
	return;
}
int main()
{
	scanf("%d%d",&n,&m);
	for (int i=1;i<=m;i++)
		scanf("%d%d",&x,&y),add(x,y),add(y,x);
	for (int i=1;i<=n;i++)
	{

		if (!vis[i])
		{
			if (head[i]==0) {si++,vis[i]=1;continue;}
			p=0;
			dfs(i,0);
			if (p) oh+=1;
			else oth+=1;
		}
	}
	//cout<<si<<" "<<oh<<" "<<oth<<endl;
//	cout<<2ll*si*n-1ll*si*si+((oth==1)?2:2ll*oth*(oth-1))+((oh==1)?1:1ll*oh*(oh-1))+2ll*oh*oth<<endl;
	ans=2ll*si*n-1ll*si*si+2ll*oth*oth+1ll*oh*oh+2ll*oh*oth;
	printf("%I64d",ans);
}

Submission Info

Submission Time
Task C - Squared Graph
User vjudge4
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1021 Byte
Status WA
Exec Time 43 ms
Memory 5760 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:61:20: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=]
  printf("%I64d",ans);
                    ^
./Main.cpp:43:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:45:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&x,&y),add(x,y),add(y,x);
                                        ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 800
Status
AC × 2
AC × 7
WA × 25
Set Name Test Cases
Sample sample1.txt, sample2.txt
All sample1.txt, sample2.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt
Case Name Status Exec Time Memory
in1.txt AC 1 ms 256 KB
in10.txt WA 1 ms 384 KB
in11.txt AC 1 ms 256 KB
in12.txt WA 11 ms 1664 KB
in13.txt WA 11 ms 1664 KB
in14.txt AC 21 ms 2432 KB
in15.txt WA 3 ms 1024 KB
in16.txt WA 16 ms 2048 KB
in17.txt WA 13 ms 1920 KB
in18.txt WA 29 ms 3584 KB
in19.txt WA 24 ms 3456 KB
in2.txt WA 1 ms 256 KB
in20.txt WA 25 ms 3456 KB
in21.txt WA 43 ms 5760 KB
in22.txt WA 33 ms 3584 KB
in23.txt WA 30 ms 3456 KB
in24.txt WA 2 ms 896 KB
in25.txt WA 43 ms 5760 KB
in26.txt WA 1 ms 256 KB
in27.txt WA 1 ms 256 KB
in28.txt WA 43 ms 5760 KB
in3.txt WA 1 ms 256 KB
in4.txt WA 1 ms 256 KB
in5.txt WA 32 ms 3456 KB
in6.txt WA 3 ms 896 KB
in7.txt WA 3 ms 896 KB
in8.txt WA 5 ms 1024 KB
in9.txt WA 13 ms 2176 KB
sample1.txt AC 1 ms 256 KB
sample2.txt AC 1 ms 256 KB