Submission #1574267
Source Code Expand
#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<algorithm>
#include<queue>
using namespace std;
const int N=100005;
const int M=N<<1;
struct E{
int to,next;
}mem[M];
int n,m,x,y,k,u,num,I,P,Q,sz;
bool tag;
int head[N],dis[N];
bool vis[N];
queue<int> q;
void add(int x,int y){
num++;
mem[num].to=y; mem[num].next=head[x];
head[x]=num;
}
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++){
while (!q.empty()) q.pop();
sz=1; tag=0;
q.push(i); vis[i]=1; dis[i]=0;
while (!q.empty()){
k=q.front(); q.pop();
for (int j=head[k];j;j=mem[j].next){
u=mem[j].to;
if (!vis[u]){
vis[u]=1;
sz++;
q.push(u);
dis[u]=dis[k]+1;
}
else{
if (!(dis[k]-dis[u]&1)){
tag=1;
break;
}
}
}
if (tag) break;
}
if (sz==1) I++;
else{
if (tag) P++;
else Q++;
}
}
printf("%lld\n",1ll*I*I+2ll*P*P+2ll*P*Q+1ll*Q*Q+2ll*I*(n-I));
return 0;
}
Submission Info
Submission Time
2017-09-08 12:38:18+0900
Task
C - Squared Graph
User
vjudge2
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
1040 Byte
Status
RE
Exec Time
115 ms
Memory
2688 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:29:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
^
./Main.cpp:31:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&x,&y);
^
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
WA
1 ms
256 KB
in10.txt
AC
2 ms
768 KB
in11.txt
WA
1 ms
256 KB
in12.txt
WA
12 ms
1920 KB
in13.txt
WA
12 ms
1920 KB
in14.txt
WA
22 ms
2688 KB
in15.txt
WA
4 ms
1280 KB
in16.txt
WA
17 ms
2304 KB
in17.txt
WA
13 ms
1920 KB
in18.txt
RE
115 ms
2176 KB
in19.txt
WA
24 ms
2688 KB
in2.txt
WA
1 ms
256 KB
in20.txt
RE
113 ms
2176 KB
in21.txt
RE
113 ms
2176 KB
in22.txt
RE
111 ms
1792 KB
in23.txt
RE
110 ms
1792 KB
in24.txt
WA
2 ms
1152 KB
in25.txt
RE
113 ms
2176 KB
in26.txt
WA
1 ms
256 KB
in27.txt
WA
1 ms
256 KB
in28.txt
RE
113 ms
2176 KB
in3.txt
WA
1 ms
256 KB
in4.txt
WA
1 ms
256 KB
in5.txt
RE
113 ms
2176 KB
in6.txt
WA
4 ms
1152 KB
in7.txt
WA
4 ms
1280 KB
in8.txt
WA
6 ms
1408 KB
in9.txt
WA
14 ms
2048 KB
sample1.txt
WA
1 ms
256 KB
sample2.txt
WA
1 ms
256 KB