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40 lines (39 loc) · 741 Bytes
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Copy pathunionofrect.cpp
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40 lines (39 loc) · 741 Bytes
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#include<bits/stdc++.h>
#define fio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
int main()
{
fio
int n,a,b,c,d,i,j,l=0;
int rec[1001][1001] = {0};
cin>>n;
while(n--)
{
cin>>a>>b>>c>>d;
for(i=b;i<d;i++)
{
for(j=a;j<c;j++)
{
rec[i][j] = 1;
}
}
// for(i=0;i<=6;i++)
// {
// for(j=0;j<=6;j++)
// {
// cout<<rec[i][j]<<" ";
// }
// cout<<"\n";
// }cout<<"\n";
}
for(i=0;i<=1000;i++)
{
for(j=0;j<=1000;j++)
{
if(rec[i][j]!=0)
l++;
}
}
cout<<l;
return 0;
}