Submission #1443472
Source Code Expand
// This amazing code is by Eric Sunli Chen. #include <algorithm> #include <bitset> #include <cmath> #include <cstring> #include <cstdio> #include <cstdlib> #include <ctime> #include <iomanip> #include <iostream> #include <map> #include <queue> #include <set> #include <string> #include <utility> #include <vector> using namespace std; template<typename T> void get_int(T &x) { char t=getchar(); bool neg=false; x=0; for(; (t>'9'||t<'0')&&t!='-'; t=getchar()); if(t=='-')neg=true,t=getchar(); for(; t<='9'&&t>='0'; t=getchar())x=x*10+t-'0'; if(neg)x=-x; } template<typename T> void print_int(T x) { if(x<0)putchar('-'),x=-x; short a[20]= {},sz=0; while(x>0)a[sz++]=x%10,x/=10; if(sz==0)putchar('0'); for(int i=sz-1; i>=0; i--)putchar('0'+a[i]); } #define ff first #define ss second #define pb push_back #define mp make_pair #define get1(a) get_int(a) #define get2(a,b) get1(a),get1(b) #define get3(a,b,c) get1(a),get2(b,c) #define printendl(a) print_int(a),puts("") typedef long long LL; typedef unsigned long long uLL; typedef pair<int,int> pii; const int inf=0x3f3f3f3f; const LL Linf=1ll<<61; const double pi=acos(-1.0); vector<int> g[100111],t[100111]; int n,m,mark[100111],sz[4],sze; bool ok; LL ans; void dfs(int x,int mk=1) { if(mark[x]&&mark[x]!=mk) { ok=0; return; } if(mark[x])return; mark[x]=mk; sz[mk]++;sz[0]++;sze+=(int)g[x].size(); for(int i=0;i<(int)g[x].size();i++) { int nmk=mk+t[x][i]; if(nmk==0)nmk=3;if(nmk==4)nmk=1; dfs(g[x][i],nmk); } } int main() { get2(n,m); for(int i=1,u,v;i<=m;i++) { get2(u,v); g[u].pb(v);t[u].pb(1); g[v].pb(u);t[v].pb(-1); } for(int i=1;i<=n;i++) { if(!mark[i]) { memset(sz,0,sizeof(sz));ok=1;sze=0; dfs(i); if(ok) { if(sz[1]&&sz[2]&&sz[3])ans+=1ll*sz[1]*sz[2]+1ll*sz[2]*sz[3]+1ll*sz[3]*sz[1]; else ans+=sze>>1; } else ans+=1ll*sz[0]*sz[0]; } } printendl(ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Blackout |
User | OhWeOnFire |
Language | C++14 (GCC 5.4.1) |
Score | 1700 |
Code Size | 1993 Byte |
Status | AC |
Exec Time | 48 ms |
Memory | 17792 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 | 3 ms | 4992 KB |
0_01.txt | AC | 3 ms | 4992 KB |
0_02.txt | AC | 3 ms | 4992 KB |
1_00.txt | AC | 3 ms | 4992 KB |
1_01.txt | AC | 4 ms | 5376 KB |
1_02.txt | AC | 31 ms | 11520 KB |
1_03.txt | AC | 34 ms | 17792 KB |
1_04.txt | AC | 34 ms | 17792 KB |
1_05.txt | AC | 36 ms | 17792 KB |
1_06.txt | AC | 34 ms | 17792 KB |
1_07.txt | AC | 34 ms | 17792 KB |
1_08.txt | AC | 34 ms | 17792 KB |
1_09.txt | AC | 34 ms | 17792 KB |
1_10.txt | AC | 34 ms | 17792 KB |
1_11.txt | AC | 34 ms | 17792 KB |
1_12.txt | AC | 36 ms | 17792 KB |
1_13.txt | AC | 34 ms | 17792 KB |
1_14.txt | AC | 22 ms | 12400 KB |
1_15.txt | AC | 22 ms | 12400 KB |
1_16.txt | AC | 22 ms | 12400 KB |
1_17.txt | AC | 12 ms | 7552 KB |
1_18.txt | AC | 48 ms | 12544 KB |
1_19.txt | AC | 48 ms | 12544 KB |
1_20.txt | AC | 47 ms | 12416 KB |
1_21.txt | AC | 47 ms | 12544 KB |
1_22.txt | AC | 47 ms | 12416 KB |
1_23.txt | AC | 47 ms | 12544 KB |
1_24.txt | AC | 48 ms | 12416 KB |
1_25.txt | AC | 47 ms | 12544 KB |
1_26.txt | AC | 47 ms | 12416 KB |
1_27.txt | AC | 46 ms | 12416 KB |
1_28.txt | AC | 47 ms | 12416 KB |
1_29.txt | AC | 47 ms | 12544 KB |
1_30.txt | AC | 46 ms | 12416 KB |
1_31.txt | AC | 46 ms | 12416 KB |
1_32.txt | AC | 48 ms | 12416 KB |
1_33.txt | AC | 47 ms | 12544 KB |
1_34.txt | AC | 45 ms | 11904 KB |
1_35.txt | AC | 40 ms | 10752 KB |
1_36.txt | AC | 43 ms | 11520 KB |
1_37.txt | AC | 46 ms | 12288 KB |
1_38.txt | AC | 38 ms | 10112 KB |
1_39.txt | AC | 36 ms | 9728 KB |
1_40.txt | AC | 48 ms | 12416 KB |
1_41.txt | AC | 47 ms | 12416 KB |
1_42.txt | AC | 40 ms | 11008 KB |
1_43.txt | AC | 41 ms | 10880 KB |
1_44.txt | AC | 46 ms | 12032 KB |
1_45.txt | AC | 34 ms | 9216 KB |
1_46.txt | AC | 46 ms | 12160 KB |
1_47.txt | AC | 47 ms | 12288 KB |
1_48.txt | AC | 39 ms | 10496 KB |
1_49.txt | AC | 43 ms | 11392 KB |