Submission #1365715
Source Code Expand
#include<iostream> #include<vector> #include<algorithm> #include<cstring> #include<cstdio> #include<cmath> #include<cstdlib> #include<ctime> #include<queue> #include<set> using namespace std; typedef long long LL; const int N=2e5+100; int gi() { int w=0;bool q=1;char c=getchar(); while ((c<'0'||c>'9') && c!='-') c=getchar(); if (c=='-') q=0,c=getchar(); while (c>='0'&&c <= '9') w=w*10+c-'0',c=getchar(); return q? w:-w; } int head[N],nxt[N],to[N],w[N]; int c[3],col[N],e; bool vis[N],flag; inline void dfs(int k,int d) { c[col[k]=d]++;vis[k]=true; for (int i=head[k];i;i=nxt[i],e++) if (!vis[to[i]]) dfs(to[i],(d+w[i])%3); else if ((d+w[i])%3!=col[to[i]]) flag=false; } int main() { int n=gi(),m=gi(),i,a,b,tot=0;LL ans=0; for (i=1;i<=m;i++) { a=gi(),b=gi(); to[++tot]=b,nxt[tot]=head[a],head[a]=tot,w[tot]=1; to[++tot]=a,nxt[tot]=head[b],head[b]=tot,w[tot]=2; } for (i=1;i<=n;i++) if (!vis[i]) { c[0]=c[1]=c[2]=e=0; flag=true; dfs(i,0); if (flag) if (c[0]&&c[1]&&c[2]) ans+=1LL*c[0]*c[1]+1LL*c[0]*c[2]+1LL*c[1]*c[2]; else ans+=e>>1; else ans+=1LL*(c[0]+c[1]+c[2])*(c[0]+c[1]+c[2]); } printf("%lld\n",ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Blackout |
User | laofu |
Language | C++14 (GCC 5.4.1) |
Score | 1700 |
Code Size | 1228 Byte |
Status | AC |
Exec Time | 17 ms |
Memory | 5504 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1700 / 1700 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 1_30.txt, 1_31.txt, 1_32.txt, 1_33.txt, 1_34.txt, 1_35.txt, 1_36.txt, 1_37.txt, 1_38.txt, 1_39.txt, 1_40.txt, 1_41.txt, 1_42.txt, 1_43.txt, 1_44.txt, 1_45.txt, 1_46.txt, 1_47.txt, 1_48.txt, 1_49.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 2 ms | 2304 KB |
0_01.txt | AC | 2 ms | 2304 KB |
0_02.txt | AC | 2 ms | 2304 KB |
1_00.txt | AC | 2 ms | 2304 KB |
1_01.txt | AC | 2 ms | 2816 KB |
1_02.txt | AC | 12 ms | 3840 KB |
1_03.txt | AC | 13 ms | 5376 KB |
1_04.txt | AC | 13 ms | 5376 KB |
1_05.txt | AC | 13 ms | 5376 KB |
1_06.txt | AC | 13 ms | 5376 KB |
1_07.txt | AC | 13 ms | 5376 KB |
1_08.txt | AC | 13 ms | 5376 KB |
1_09.txt | AC | 13 ms | 5504 KB |
1_10.txt | AC | 13 ms | 5376 KB |
1_11.txt | AC | 13 ms | 5376 KB |
1_12.txt | AC | 13 ms | 5376 KB |
1_13.txt | AC | 14 ms | 5376 KB |
1_14.txt | AC | 9 ms | 3840 KB |
1_15.txt | AC | 9 ms | 3840 KB |
1_16.txt | AC | 9 ms | 3840 KB |
1_17.txt | AC | 9 ms | 3328 KB |
1_18.txt | AC | 17 ms | 4224 KB |
1_19.txt | AC | 17 ms | 4224 KB |
1_20.txt | AC | 17 ms | 4224 KB |
1_21.txt | AC | 17 ms | 4224 KB |
1_22.txt | AC | 17 ms | 4224 KB |
1_23.txt | AC | 17 ms | 4224 KB |
1_24.txt | AC | 17 ms | 4224 KB |
1_25.txt | AC | 17 ms | 4224 KB |
1_26.txt | AC | 17 ms | 4224 KB |
1_27.txt | AC | 17 ms | 4224 KB |
1_28.txt | AC | 17 ms | 4224 KB |
1_29.txt | AC | 17 ms | 4224 KB |
1_30.txt | AC | 17 ms | 4224 KB |
1_31.txt | AC | 17 ms | 4224 KB |
1_32.txt | AC | 17 ms | 4224 KB |
1_33.txt | AC | 17 ms | 4224 KB |
1_34.txt | AC | 17 ms | 4224 KB |
1_35.txt | AC | 16 ms | 3968 KB |
1_36.txt | AC | 17 ms | 4096 KB |
1_37.txt | AC | 17 ms | 4224 KB |
1_38.txt | AC | 16 ms | 3840 KB |
1_39.txt | AC | 16 ms | 3840 KB |
1_40.txt | AC | 17 ms | 4224 KB |
1_41.txt | AC | 17 ms | 4224 KB |
1_42.txt | AC | 16 ms | 3968 KB |
1_43.txt | AC | 16 ms | 3968 KB |
1_44.txt | AC | 17 ms | 4224 KB |
1_45.txt | AC | 16 ms | 3712 KB |
1_46.txt | AC | 17 ms | 4224 KB |
1_47.txt | AC | 17 ms | 4224 KB |
1_48.txt | AC | 16 ms | 3968 KB |
1_49.txt | AC | 17 ms | 4096 KB |