Submission #2379472
Source Code Expand
#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#define int LL
using namespace std;
typedef long long LL;
const int N=1e6;
int n,m,vis[N+10],head[N+10],tot;
LL cnt1=0,cnt2=0,cnt3=0;
struct data {
int next,num;
}edge[N+10];
void Add(int u,int v) {
edge[++tot].next=head[u];
edge[tot].num=v;
head[u]=tot;
}
int dfs(int x,int k) {
if (vis[x]!=-1&&vis[x]!=k) return 0;
if (vis[x]!=-1) return 1;
vis[x]=k;
for (int i=head[x];i!=-1;i=edge[i].next) {
int kx=edge[i].num;
int nowk=dfs(kx,k^1);
if (nowk==0) return 0;
}
return 1;
}
main() {
memset(head,-1,sizeof(head));
scanf("%lld%lld",&n,&m);
for (int i=1;i<=m;i++) {
int u,v;
scanf("%lld%lld",&u,&v);
Add(u,v);
Add(v,u);
}
memset(vis,-1,sizeof(vis));
for (int i=1;i<=n;i++) {
if (vis[i]!=-1) continue;
if (head[i]==-1) {
cnt3++;
continue;
}
int k=dfs(i,1);
if (k==0) cnt1++;
else cnt2++;
}
LL ans=(LL)n*n-(n-cnt3)*(n-cnt3);
ans+=cnt1*cnt1+cnt1*cnt2*2+cnt2*cnt2*2;
printf("%lld\n",ans);
return 0;
}
Submission Info
Submission Time
2018-04-19 21:42:53+0900
Task
C - Squared Graph
User
codefestival
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
1130 Byte
Status
WA
Exec Time
49 ms
Memory
25344 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:32:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld%lld",&n,&m);
^
./Main.cpp:35:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld%lld",&u,&v);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
0 / 800
Status
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
5 ms
17152 KB
in10.txt
AC
6 ms
17152 KB
in11.txt
AC
5 ms
17152 KB
in12.txt
AC
16 ms
18688 KB
in13.txt
AC
16 ms
18688 KB
in14.txt
AC
26 ms
21248 KB
in15.txt
WA
7 ms
17536 KB
in16.txt
WA
21 ms
21248 KB
in17.txt
WA
18 ms
18816 KB
in18.txt
WA
35 ms
23296 KB
in19.txt
WA
28 ms
21248 KB
in2.txt
WA
5 ms
17152 KB
in20.txt
WA
29 ms
21248 KB
in21.txt
WA
49 ms
25344 KB
in22.txt
WA
38 ms
25344 KB
in23.txt
WA
35 ms
25344 KB
in24.txt
AC
6 ms
17152 KB
in25.txt
WA
47 ms
25344 KB
in26.txt
WA
5 ms
17152 KB
in27.txt
WA
5 ms
17152 KB
in28.txt
WA
48 ms
25344 KB
in3.txt
WA
5 ms
17152 KB
in4.txt
WA
5 ms
17280 KB
in5.txt
WA
37 ms
23296 KB
in6.txt
AC
7 ms
17280 KB
in7.txt
WA
7 ms
17408 KB
in8.txt
WA
9 ms
17792 KB
in9.txt
WA
17 ms
19072 KB
sample1.txt
AC
5 ms
17152 KB
sample2.txt
AC
5 ms
17152 KB