OJ-Problems-Source/HDOJ/2461_autoAC.cpp

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#include<cstdio>
#include<cmath>
#include<algorithm>
#include<cstring>
using namespace std;
struct Rectangle { int x1, y1, x2, y2;};
Rectangle rec[30];
int a[30], cnt;
int s[1100000];
int n, m;
Rectangle Intersection ( Rectangle r1, Rectangle r2 )
{
Rectangle ret;
if ( r1.x2 <= r2.x1 || r2.x2 <= r1.x1 || r1.y2 <= r2.y1 || r2.y2 <= r1.y1 )
{
ret.x1 = ret.y1 = ret.y1 = ret.y2 = 0;
return ret;
}
ret.x1 = max ( r1.x1, r2.x1 );
ret.y1 = max ( r1.y1, r2.y1 );
ret.x2 = min ( r1.x2, r2.x2 );
ret.y2 = min ( r1.y2, r2.y2 );
return ret;
}
int Area ( Rectangle r )
{
if ( r.x1 >= r.x2 || r.y1 >= r.y2 )
return 0;
return (r.y2-r.y1) * (r.x2-r.x1);
}
int In_Exclusion ( int k, Rectangle r )
{
if ( Area(r) == 0 ) return 0;
int ret = 0;
Rectangle tmp;
for ( int i = k; i < cnt; i++ )
{
tmp = Intersection(r,rec[a[i]]);
ret += Area(tmp) - In_Exclusion ( i + 1, tmp );
}
return ret;
}
int main()
{
int t = 0;
Rectangle total;
total.x1 = total.y1 = 0;
total.x2 = total.y2 = 1000;
while (scanf("%d%d",&n,&m) && (m||n))
{
int i, R, id, add;
for ( i = 1; i <= n; i++ )
scanf("%d%d%d%d",&rec[i].x1,&rec[i].y1,&rec[i].x2,&rec[i].y2);
printf("Case %d:\n",++t);
memset(s,0,sizeof(s));
for ( i = 1; i <= m; i++ )
{
scanf("%d",&R);
cnt = add = 0;
while ( R-- )
{
scanf("%d",&id);
if ( add & (1<<(id-1)) ) continue;
add = (add | (1<<(id-1)));
a[cnt++] = id;
}
if ( s[add] == 0 )
s[add] = In_Exclusion (0,total);
printf("Query %d: %d\n",i,s[add]);
}
printf("\n");
}
return 0;
}