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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#283942#5116. ContestsyhdddWA 0ms44556kbC++141.6kb2023-12-15 19:09:532023-12-15 19:09:53

Judging History

你现在查看的是最新测评结果

  • [2023-12-15 19:09:53]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:44556kb
  • [2023-12-15 19:09:53]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int maxn=100010;
const int inf=1e9;
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+(ch-48);ch=getchar();}
	return x*f;
}

int n,m,q;
int a[6][maxn],b[6][maxn];
int f[18][maxn][6];
int p[6],p1[6];
void work(){
	n=read();m=read();
	for(int i=1;i<=m;i++){
		for(int j=1;j<=n;j++){
			a[i][j]=read(),b[i][a[i][j]]=j;
		}
	}
	memset(f[0],0x3f,sizeof(f[0]));
	for(int i=1;i<=m;i++){
		for(int j=1;j<=m;j++){
			int mn=n+1;
			for(int k=n;k;k--){
				mn=min(mn,b[j][a[i][k]]);
				f[0][k][j]=min(f[0][k][j],mn);
			}
		}
	}
	for(int i=1;i<=17;i++){
		for(int j=1;j<=n;j++){
			for(int k=1;k<=m;k++){
				f[i][j][k]=f[i-1][j][k];
				for(int l=1;l<=m;l++){
					f[i][j][k]=min(f[i][j][k],f[i-1][a[l][f[i-1][j][l]]][k]);
				}
			}
		}
	}
	q=read();
	while(q--){
		int u=read(),v=read(),fl=0,fl1=0,ans=2;
		for(int i=1;i<=m;i++){
			p[i]=b[i][u];
			if(p[i]<b[i][v]){fl=1;break;}
		}
		if(fl){printf("1\n");continue;}
		for(int i=17;~i;i--){
			for(int j=1;j<=m;j++){
				p1[j]=p[j];
				for(int k=1;k<=m;k++)p1[j]=min(p1[j],f[i][a[k][p[k]]][j]);
			}
			fl=0;
			for(int j=1;j<=m;j++){
				if(p1[j]<b[j][v]){fl=1;break;}
			}
			if(!fl){
				for(int j=1;j<=m;j++)p[j]=p1[j];
				ans+=(1<<i);
			}
			else fl1=1;
		}
		if(!fl1)printf("-1\n");
		else printf("%d\n",ans);
	}
}

int T;
signed main(){
	//	freopen(".in","r",stdin);
	//	freopen(".out","w",stdout);
	
	T=1;
	while(T--)work();
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 43984kb

input:

6 2
1 3 2 5 4 6
2 1 4 3 6 5
4
1 4
5 3
6 1
5 2

output:

1
2
5
3

result:

ok 4 number(s): "1 2 5 3"

Test #2:

score: -100
Wrong Answer
time: 0ms
memory: 44556kb

input:

998 5
1 2 6 3 4 5 7 11 8 9 14 12 13 10 15 16 18 19 20 17 23 22 21 26 24 25 27 29 30 28 32 31 34 33 37 38 39 35 40 36 41 43 42 46 44 48 45 47 51 49 50 56 52 57 53 54 55 62 58 59 63 64 60 65 66 61 67 69 70 68 71 73 74 75 72 78 77 79 82 76 81 85 84 80 86 87 83 88 90 91 89 92 96 98 94 95 97 101 93 103 1...

output:

-1
-1
1
1
1
26
1
-1
-1
1
25
-1
34
1
1
1
109
1
1
1
1
-1
1
-1
133
1
1
1
40
-1
1
1
-1
-1
41
-1
1
1
1
1
1
1
1
1
22
-1
-1
1
1
-1
-1
1
1
-1
1
1
-1
1
-1
1
1
1
4
115
1
1
-1
45
-1
1
1
24
-1
1
1
1
-1
-1
-1
1
36
-1
-1
45
-1
1
-1
-1
1
1
1
76
-1
-1
29
-1
-1
1
-1
1
1
2
1
1
1
17
-1
1
-1
1
100
-1
-1
-1
1
1
10
1
-1
...

result:

wrong answer 1st numbers differ - expected: '94', found: '-1'