75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
#include<iostream>
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#include<climits>
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using namespace std;
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const int maxn=85;
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int N,M,K,X,Y;
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int matrix[maxn][maxn][maxn];
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int t[maxn][maxn];
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int dis[maxn][maxn];
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bool judge(int a,int b,int c)
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{
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int i,j,k;
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for(i=1;i<=M;++i)
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{
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t[0][i]=0;
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for(j=1;j<=M;++j)
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t[0][i]+=matrix[a][i][j]*t[b][j];
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}
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for(i=1;i<=M;++i)
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if(t[0][i]!=t[c][i])
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return false;
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return true;
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}
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int main()
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{
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int i,j,k;
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while(cin>>N>>M&&(M+N))
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{
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for(i=1;i<=N;++i)
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for(j=i+1;j<=N;++j)
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dis[i][j]=dis[j][i]=INT_MAX;
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for(i=1;i<=N;++i)
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for(j=1;j<=M;++j)
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{
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t[i][j]=0;
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for(k=1;k<=M;++k)
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{
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cin>>matrix[i][j][k];
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t[i][j]+=matrix[i][j][k]*k;
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}
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}
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for(i=1;i<=N;++i)
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for(j=1;j<=N;++j)
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{
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if(i==j)
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continue;
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for(k=1;k<=N;++k)
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{
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if(i==k||j==k||dis[i][k]==1)
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continue;
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if(judge(i,j,k))
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dis[i][k]=1;
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}
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}
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for(k=1;k<=N;++k)
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for(i=1;i<=N;++i)
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{
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if(dis[i][k]==INT_MAX)
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continue;
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for(j=1;j<=N;++j)
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if(dis[k][j]<INT_MAX&&dis[i][k]+dis[k][j]<dis[i][j])
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dis[i][j]=dis[i][k]+dis[k][j];
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}
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cin>>K;
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for(i=1;i<=K;++i)
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{
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cin>>X>>Y;
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if(dis[X][Y]==INT_MAX)
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cout<<"Sorry"<<endl;
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else
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cout<<dis[X][Y]<<endl;
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}
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}
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return 0;
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}
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