QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#570002#9319. Bull FarmlixpTL 99ms31508kbC++173.3kb2024-09-17 13:10:292024-09-17 13:10:34

Judging History

你现在查看的是最新测评结果

  • [2024-09-17 13:10:34]
  • 评测
  • 测评结果:TL
  • 用时:99ms
  • 内存:31508kb
  • [2024-09-17 13:10:29]
  • 提交

answer

#include<bits/stdc++.h>
#define mk make_pair
using namespace std;
const int N=2005,M=1e6+10;
int n,m,t,ans[M],p[N][N];
char s[N];
struct qst {
	int nm,ts,a,b;
} q[M];
bitset<N> opt[N],f[N];
int tg[N],pre[N];
int fir[N],ne[M],to[M],cnt;
void add(int x,int y) {
	ne[++cnt]=fir[x];
	fir[x]=cnt;
	to[cnt]=y;
}
int Fir[N],Ne[M],To[M],Cnt;
void Add(int x,int y) {
	Ne[++Cnt]=Fir[x];
	Fir[x]=Cnt;
	To[Cnt]=y;
}
int dfn[N],low[N],cl[N],nm,st[N],tp,tt;
void dfs(int x) {
	dfn[x]=low[x]=++tt;
	st[++tp]=x;
	for(int i=fir[x];i;i=ne[i]) {
		int y=to[i];
		if(!dfn[y]) dfs(y),low[x]=min(low[x],low[y]);
		else if(!cl[y]) low[x]=min(low[x],dfn[y]);
	}
	if(low[x]==dfn[x]) {
//		cout<<"!@#  "<<x<<"\n";
		nm++;f[nm][x]=1;cl[x]=nm;
		while(st[tp]!=x) f[nm][st[tp]]=1,cl[st[tp]]=nm,tp--;
		tp--;
	}
}
void init() {
	for(int i=1;i<=n;i++) opt[i].reset();
	for(int i=1;i<=n;i++) fir[i]=0; cnt=0;
}
bool cmp(const qst &x,const qst &y) {
	return x.ts<y.ts;
}
int rd[N];
void ins(int tm) {
	int flag=0; pair<int,int> W;
	for(int i=1;i<=n;i++) tg[i]=0;
	for(int i=1;i<=n;i++) pre[i]=0;
	for(int i=1;i<=n;i++) {
		pre[p[tm][i]]=i;
		if(tg[p[tm][i]]) {
			if(flag) return;
			flag=p[tm][i]; W=mk(tg[p[tm][i]],i);
		} else tg[p[tm][i]]=i;
	}
//	cout<<"!  "<<flag<<"\n";
	if(!flag) {
		for(int i=1;i<=n;i++)
			add(i,p[tm][i]);
	}  else {
		int xx=W.first,yy=W.second;
		while(pre[xx] && pre[xx]!=flag) xx=pre[xx];
		while(pre[yy] && pre[yy]!=flag) yy=pre[yy];
		if(!pre[yy]) xx=yy;
		
//		cout<<"!         "<<W.first<<"  "<<W.second<<"  "<<xx<<"\n";
		add(W.first,xx);add(W.second,xx);
	}
//	cout<<"----------------------------------------\n";
//	for(int i=1;i<=n;i++) cout<<f[i]<<"\n";
//	cout<<endl;
	for(int i=1;i<=n;i++) dfn[i]=low[i]=cl[i]=0,rd[i]=0;
	for(int i=1;i<=nm;i++) f[i].reset();
	for(int i=1;i<=nm;i++) Fir[i]=0;
	tp=nm=tt=0;Cnt=0;
	
	for(int i=1;i<=n;i++) if(!dfn[i]) dfs(i);
	
	for(int x=1;x<=n;x++) {
		for(int i=fir[x];i;i=ne[i]) {
			int y=to[i];
			if(cl[x]!=cl[y]) Add(cl[y],cl[x]),rd[cl[x]]++;
		}
	}
	queue<int> q;
	for(int i=1;i<=nm;i++) if(!rd[i]) q.push(i);
//	for(int i=1;i<=n;i++) cout<<i<<" -> "<<cl[i]<<"\n";
	while(q.size()) {
		int x=q.front();q.pop();
//		cout<<x<<"  "<<f[x][1]<<f[x][2]<<f[x][3]<<"\n";
		for(int i=Fir[x];i;i=Ne[i]) {
			int y=To[i]; rd[y]--;
			f[y]|=f[x];
			if(!rd[y]) q.push(y);
		}
	}
	for(int i=1;i<=n;i++) opt[i]=f[cl[i]];
//	for(int i=1;i<=n;i++) cout<<"::   "<<i<<" "<<opt[i][1]<<opt[i][2]<<opt[i][3]<<"\n";
}
void solve() {
	scanf("%d%d%d",&n,&m,&t);
	for(int i=1;i<=n;i++) opt[i][i]=1;
	for(int i=1;i<=m;i++) {
		scanf("%s",s+1);
		for(int j=1;j<=2*n;j+=2)
			p[i][j/2+1]=(s[j]-'0')*50+(s[j+1]-'0');
	}
	for(int i=1;i<=t;i++) {
		scanf("%s",s+1);
		q[i].a=(s[1]-'0')*50+(s[2]-'0');
		q[i].b=(s[3]-'0')*50+(s[4]-'0');
		q[i].ts=(s[5]-'0')*50+(s[6]-'0'); q[i].nm=i;
	}
	sort(q+1,q+t+1,cmp);
	int nw=1;
	for(int i=1;i<=t;i++) {
//		cout<<i<<"  "<<q[i].ts<<"\n";
		while(nw<=m && nw<=q[i].ts) ins(nw++);
		ans[q[i].nm]=opt[q[i].a][q[i].b];
	}
//	cout<<"#######                                   ";
	for(int i=1;i<=t;i++) cout<<ans[i];
	cout<<endl;
}
int main() {
	int T;scanf("%d",&T);
	while(T--) {
		init(); solve();
	}
	return 0;
}

/*
1
3 1 1
030301


010202


*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 13936kb

input:

2
5 2 4
0305040201
0404040404
030300
020500
050102
020501
6 2 4
030603010601
010203060504
030202
060402
050602
060401

output:

1011
0100

result:

ok 2 lines

Test #2:

score: 0
Accepted
time: 2ms
memory: 18048kb

input:

1
3 3 6
020202
030301
030201
020102
030203
010201
010303
020303
010202

output:

010101

result:

ok single line: '010101'

Test #3:

score: 0
Accepted
time: 91ms
memory: 16292kb

input:

200
10 10 5000
01060:04020305080709
0103070:060204050908
09070503080401060:02
050308010204090:0607
03010502040607080:09
03080109020504060:07
06050:09040302080107
07080305010409060:02
030809010:0204060507
0:060908070201050304
060700
090:03
09080:
070405
010703
0:0100
080601
030600
070206
0:0:09
08040...

output:

011110001101101111111111111111111101111111110111011110110110111011010111111111111111111101111111111110111111110111111111111101111111111110111111111111111111110001100111111111111111111111111011101111111111111111111111111111111111111111011011110100111110111111110111111100111111101110111111111101111110...

result:

ok 200 lines

Test #4:

score: 0
Accepted
time: 99ms
memory: 31508kb

input:

1
2000 1 1000000
M=:]A@8UAY7W2JJ4KEHIA[HSCQ1ENSC`JXR;F3PJ:_@41P9Z=9HR8P<<:DUXRR9^WOQFL?NZP6S@=J0^WE32=6;\U0?88]Q_RNPUMT6YU<4<S]H?:7OCQYOT4YAV1^764ENWSDBED>M7A:BI>KSIR48JQ9B=N\5T3N4A2aF0@>3TI81<G7;YE>W`NMP<:IT4CI3D0=GZC3I\CLQJQBA9BDIS9SAM55KaVA<Z@D=>:Y?CQHUQ5U3a6UVI8OKX9_FAF^7=5M85;<0;8YPAM<7Z7PP7A=N...

output:

000101000101100010001000000010010110000001000001001100000000010000100001000000101100000000010000001000000001110000010110100000111100100000001000000000011001010001000001001000100000000100011001100110010000010000101100000011111000000010000101010010000000010101000001010111100000100000000000000101000100...

result:

ok single line: '000101000101100010001000000010...0101000101000000000010101001000'

Test #5:

score: -100
Time Limit Exceeded

input:

1
2000 2000 1000000
FVAaH7GRPO;_11Da5J18@3SMG==\G8E8S^6:M4L0JH>MN5IXT>2<7WJ3U8LVJS=;;3F13>0D0>VOIIU@EPHG6ABL6;K?T1PXDERLG07]5C9^GDKG<SBMIW;`4W8P3=469TIPKH0O34523_J5C2MJ17D25Z@=K8H@M>WK<CMK7EO]BPD7B6AW741J5YIHIa1:ERSG>L3N2^F3<4F`DLE@2AA5=8GZK6:192FB736[WMV7:^DA2C:<LK040VJBM3M]WXU50`407TR_?PLF@5VL7OSL...

output:


result: