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
AC × 3
AC × 53
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