OJ-Problems-Source/HDOJ/4819_autoAC.cpp

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#include <stdio.h>
#include <string.h>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <string>
#include <math.h>
#include <stdlib.h>
#include <time.h>
using namespace std;
const int INF = 0x3f3f3f3f;
const int MAXN = 1010;
struct Nodey
{
int l,r;
int Max,Min;
};
int locy[MAXN],locx[MAXN];
struct Nodex
{
int l,r;
Nodey sty[MAXN*4];
void build(int i,int _l,int _r)
{
sty[i].l = _l;
sty[i].r = _r;
sty[i].Max = -INF;
sty[i].Min = INF;
if(_l == _r)
{
locy[_l] = i;
return;
}
int mid = (_l + _r)/2;
build(i<<1,_l,mid);
build((i<<1)|1,mid+1,_r);
}
int queryMin(int i,int _l,int _r)
{
if(sty[i].l == _l && sty[i].r == _r)
return sty[i].Min;
int mid = (sty[i].l + sty[i].r)/2;
if(_r <= mid)return queryMin(i<<1,_l,_r);
else if(_l > mid)return queryMin((i<<1)|1,_l,_r);
else return min(queryMin(i<<1,_l,mid),queryMin((i<<1)|1,mid+1,_r));
}
int queryMax(int i,int _l,int _r)
{
if(sty[i].l == _l && sty[i].r == _r)
return sty[i].Max;
int mid = (sty[i].l + sty[i].r)/2;
if(_r <= mid)return queryMax(i<<1,_l,_r);
else if(_l > mid)return queryMax((i<<1)|1,_l,_r);
else return max(queryMax(i<<1,_l,mid),queryMax((i<<1)|1,mid+1,_r));
}
}stx[MAXN*4];
int n;
void build(int i,int l,int r)
{
stx[i].l = l;
stx[i].r = r;
stx[i].build(1,1,n);
if(l == r)
{
locx[l] = i;
return;
}
int mid = (l+r)/2;
build(i<<1,l,mid);
build((i<<1)|1,mid+1,r);
}
void Modify(int x,int y,int val)
{
int tx = locx[x];
int ty = locy[y];
stx[tx].sty[ty].Min = stx[tx].sty[ty].Max = val;
for(int i = tx;i;i >>= 1)
for(int j = ty;j;j >>= 1)
{
if(i == tx && j == ty)continue;
if(j == ty)
{
stx[i].sty[j].Min = min(stx[i<<1].sty[j].Min,stx[(i<<1)|1].sty[j].Min);
stx[i].sty[j].Max = max(stx[i<<1].sty[j].Max,stx[(i<<1)|1].sty[j].Max);
}
else
{
stx[i].sty[j].Min = min(stx[i].sty[j<<1].Min,stx[i].sty[(j<<1)|1].Min);
stx[i].sty[j].Max = max(stx[i].sty[j<<1].Max,stx[i].sty[(j<<1)|1].Max);
}
}
}
int queryMin(int i,int x1,int x2,int y1,int y2)
{
if(stx[i].l == x1 && stx[i].r == x2)
return stx[i].queryMin(1,y1,y2);
int mid = (stx[i].l + stx[i].r)/2;
if(x2 <= mid)return queryMin(i<<1,x1,x2,y1,y2);
else if(x1 > mid)return queryMin((i<<1)|1,x1,x2,y1,y2);
else return min(queryMin(i<<1,x1,mid,y1,y2),queryMin((i<<1)|1,mid+1,x2,y1,y2));
}
int queryMax(int i,int x1,int x2,int y1,int y2)
{
if(stx[i].l == x1 && stx[i].r == x2)
return stx[i].queryMax(1,y1,y2);
int mid = (stx[i].l + stx[i].r)/2;
if(x2 <= mid)return queryMax(i<<1,x1,x2,y1,y2);
else if(x1 > mid)return queryMax((i<<1)|1,x1,x2,y1,y2);
else return max(queryMax(i<<1,x1,mid,y1,y2),queryMax((i<<1)|1,mid+1,x2,y1,y2));
}
int main()
{
int T;
scanf("%d",&T);
int iCase = 0;
while(T--)
{
iCase++;
printf("Case #%d:\n",iCase);
scanf("%d",&n);
build(1,1,n);
for(int i = 1;i <= n;i++)
for(int j = 1;j <= n;j++)
{
int a;
scanf("%d",&a);
Modify(i,j,a);
}
int q;
int x,y,L;
scanf("%d",&q);
while(q--)
{
scanf("%d%d%d",&x,&y,&L);
int x1 = max(x - L/2,1);
int x2 = min(x + L/2,n);
int y1 = max(y - L/2,1);
int y2 = min(y + L/2,n);
int Max = queryMax(1,x1,x2,y1,y2);
int Min = queryMin(1,x1,x2,y1,y2);
int t = (Max+Min)/2;
printf("%d\n",t);
Modify(x,y,t);
}
}
return 0;
}