This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "game.h"
#include <bits/stdc++.h>
using namespace std;
int n,m;
vector<long long int>st[2001];
void init(int R,int C)
{
n=R;
m=C;
for(int i=0;i<n;i++)
{
st[i].resize(4*m+1);
}
}
void updatest(int i,int l,int r,int a,int b,long long int k)
{
if(l==r)
{
st[a][i]=k;
return;
}
int m=(l+r)/2;
if(b<=m)updatest(i*2,l,m,a,b,k);
else
{
updatest(i*2+1,m+1,r,a,b,k);
}
st[a][i]=gcd(st[a][i*2],st[a][i*2+1]);
}
long long int gsum(int i,int l,int r,int tl,int tr,int a)
{
if(tl>r||tr<l||l>r)
{
return 0;
}
if(tl<=l&&r<=tr)
{
return st[a][i];
}
int m=(l+r)/2;
return gcd(gsum(i*2,l,m,tl,tr,a),gsum(i*2+1,m+1,r,tl,tr,a));
}
long long int calculate(int r1,int r2,int c1,int c2)
{
long long int sum=0;
for(int i=r1;i<=c1;i++)
{
sum=gcd(sum,gsum(1,0,m-1,r2,c2,i));
}
return sum;
}
void update(int R,int C,long long int k)
{
updatest(1,0,m-1,R,C,k);
}
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