Submission #1365201
Source Code Expand
#include<bits/stdc++.h> #define rep(i,a,b) for(int i=(a);i<=(b);i++) #define per(i,a,b) for(int i=(a);i>=(b);i--) #define forE(i,x) for(int i=head[x];i!=-1;i=ne[i]) using namespace std; inline void read(int &x){ x=0;char ch=getchar();int f=1; while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();} while(ch>='0'&&ch<='9'){x=10*x+ch-'0';ch=getchar();}x*=f; } inline void judge(){ freopen("table.in","r",stdin); freopen("table.out","w",stdout); } const int maxn=100005; typedef long long i64; int num,n,m,head[maxn],t[maxn<<1],ne[maxn<<1],v[maxn<<1]; inline void addedge(int x,int y,int z){ ne[++num]=head[x];head[x]=num;t[num]=y;v[num]=z; } bool vis[maxn]; int cnt[4],d[maxn],T; bool godie=0; inline void dfs(int x,int l){ vis[x]=1;d[x]=l;cnt[l]++; forE(i,x)if(!vis[t[i]]){ dfs(t[i],(l+v[i])%3);T++; }else{ if((l+v[i])%3!=d[t[i]])godie=1;T++; } }i64 ans=0; int main(){ // judge(); read(n);read(m); rep(i,1,n)head[i]=-1; rep(i,1,m){ int x,y;read(x);read(y); addedge(x,y,1); addedge(y,x,2); } rep(i,1,n){ if(vis[i])continue;memset(cnt,0,sizeof(cnt));godie=0;T=0; dfs(i,0);i64 sum=cnt[0]+cnt[1]+cnt[2]; if(godie){ ans+=sum*sum;continue; }else{ if(cnt[0]&&cnt[1]&&cnt[2]){ ans+=1ll*cnt[0]*cnt[1]+1ll*cnt[0]*cnt[2]+1ll*cnt[1]*cnt[2]; }else{ ans+=T/2; } } }cout<<ans<<endl; }
Submission Info
Submission Time | |
---|---|
Task | F - Blackout |
User | cwystc |
Language | C++14 (GCC 5.4.1) |
Score | 1700 |
Code Size | 1377 Byte |
Status | AC |
Exec Time | 19 ms |
Memory | 4992 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 | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 2 ms | 1152 KB |
1_02.txt | AC | 12 ms | 3456 KB |
1_03.txt | AC | 13 ms | 4992 KB |
1_04.txt | AC | 13 ms | 4992 KB |
1_05.txt | AC | 13 ms | 4992 KB |
1_06.txt | AC | 13 ms | 4992 KB |
1_07.txt | AC | 13 ms | 4992 KB |
1_08.txt | AC | 13 ms | 4992 KB |
1_09.txt | AC | 13 ms | 4992 KB |
1_10.txt | AC | 13 ms | 4992 KB |
1_11.txt | AC | 13 ms | 4992 KB |
1_12.txt | AC | 13 ms | 4992 KB |
1_13.txt | AC | 13 ms | 4992 KB |
1_14.txt | AC | 10 ms | 3456 KB |
1_15.txt | AC | 10 ms | 3456 KB |
1_16.txt | AC | 10 ms | 3456 KB |
1_17.txt | AC | 9 ms | 2560 KB |
1_18.txt | AC | 19 ms | 3840 KB |
1_19.txt | AC | 19 ms | 3840 KB |
1_20.txt | AC | 19 ms | 3840 KB |
1_21.txt | AC | 19 ms | 3840 KB |
1_22.txt | AC | 19 ms | 3840 KB |
1_23.txt | AC | 19 ms | 3840 KB |
1_24.txt | AC | 18 ms | 3840 KB |
1_25.txt | AC | 19 ms | 3840 KB |
1_26.txt | AC | 19 ms | 3840 KB |
1_27.txt | AC | 18 ms | 3840 KB |
1_28.txt | AC | 19 ms | 3840 KB |
1_29.txt | AC | 19 ms | 3840 KB |
1_30.txt | AC | 18 ms | 3840 KB |
1_31.txt | AC | 18 ms | 3840 KB |
1_32.txt | AC | 19 ms | 3840 KB |
1_33.txt | AC | 19 ms | 3840 KB |
1_34.txt | AC | 18 ms | 3712 KB |
1_35.txt | AC | 17 ms | 3328 KB |
1_36.txt | AC | 18 ms | 3584 KB |
1_37.txt | AC | 19 ms | 3840 KB |
1_38.txt | AC | 17 ms | 3200 KB |
1_39.txt | AC | 16 ms | 3072 KB |
1_40.txt | AC | 19 ms | 3840 KB |
1_41.txt | AC | 19 ms | 3840 KB |
1_42.txt | AC | 17 ms | 3328 KB |
1_43.txt | AC | 18 ms | 3456 KB |
1_44.txt | AC | 18 ms | 3712 KB |
1_45.txt | AC | 16 ms | 3072 KB |
1_46.txt | AC | 19 ms | 3840 KB |
1_47.txt | AC | 19 ms | 3840 KB |
1_48.txt | AC | 17 ms | 3328 KB |
1_49.txt | AC | 18 ms | 3584 KB |