61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
#include <stdio.h>
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#include <algorithm>
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#include <iostream>
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#include <string.h>
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using namespace std;
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int val[310][310];
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int dp[310][310][9][9];
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int mm[310];
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void initRMQ(int n,int m)
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{
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for(int i = 1;i <= n;i++)
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for(int j = 1;j <= m;j++)
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dp[i][j][0][0] = val[i][j];
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for(int ii = 0; ii <= mm[n]; ii++)
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for(int jj = 0; jj <= mm[m]; jj++)
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if(ii+jj)
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for(int i = 1; i + (1<<ii) - 1 <= n;i++)
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for(int j = 1; j + (1<<jj) - 1 <= m;j++)
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{
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if(ii)dp[i][j][ii][jj] = max(dp[i][j][ii-1][jj],dp[i+(1<<(ii-1))][j][ii-1][jj]);
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else dp[i][j][ii][jj] = max(dp[i][j][ii][jj-1],dp[i][j+(1<<(jj-1))][ii][jj-1]);
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}
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}
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int rmq(int x1,int y1,int x2,int y2)
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{
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int k1 = mm[x2-x1+1];
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int k2 = mm[y2-y1+1];
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x2 = x2 - (1<<k1) + 1;
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y2 = y2 - (1<<k2) + 1;
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return max(max(dp[x1][y1][k1][k2],dp[x1][y2][k1][k2]),max(dp[x2][y1][k1][k2],dp[x2][y2][k1][k2]));
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}
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int main()
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{
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mm[0] = -1;
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for(int i = 1;i <= 305;i++)
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mm[i] = ((i&(i-1))==0)?mm[i-1]+1:mm[i-1];
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int n,m;
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int Q;
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int r1,c1,r2,c2;
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while(scanf("%d%d",&n,&m) == 2)
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{
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for(int i = 1;i <= n;i++)
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for(int j = 1;j <= m;j++)
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scanf("%d",&val[i][j]);
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initRMQ(n,m);
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scanf("%d",&Q);
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while(Q--)
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{
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scanf("%d%d%d%d",&r1,&c1,&r2,&c2);
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if(r1 > r2)swap(r1,r2);
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if(c1 > c2)swap(c1,c2);
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int tmp = rmq(r1,c1,r2,c2);
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printf("%d ",tmp);
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if(tmp == val[r1][c1] || tmp == val[r1][c2] || tmp == val[r2][c1] || tmp == val[r2][c2])
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printf("yes\n");
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else printf("no\n");
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}
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}
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return 0;
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}
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