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>
#define MAX_N 22005
typedef long long LL;
long long gcd2(long long X, long long Y) {
long long tmp;
while (X != Y && Y != 0) {
tmp = X;
X = Y;
Y = tmp % Y;
}
return X;
}
struct Tree{
int l,r;
LL x;
}root[33*MAX_N],tree[450*MAX_N];
int n,m;
int tn,rn;
void init(int R, int C) {
n=R;
m=C;
rn=1;
tn=0;
}
void updateY(int x,int l,int r,int q,LL v) {
if(q < l || q > r) return ;
if(l == r){
tree[x].x=v;
return ;
}
LL mid=(l + r) >> 1;
if(q<=mid) updateY(tree[x].l ? tree[x].l : (tree[x].l = ++tn),l,mid,q,v);
if(q>mid) updateY(tree[x].r ? tree[x].r : (tree[x].r = ++tn),mid+1,r,q,v);
tree[x].x=gcd2(tree[tree[x].l].x,tree[tree[x].r].x);
}
void mergeY(int X,int L,int R,int l,int r,int q){
if(q < l || q > r) return ;
if(L==0 && R==0){
return ;
}
if(l == r){
tree[X].x=gcd2(tree[L].x,tree[R].x);
return ;
}
int mid=(l + r) >> 1;
if(q<=mid) mergeY(tree[X].l ? tree[X].l : (tree[X].l = ++tn),tree[L].l,tree[R].l,l,mid,q);
if(q>mid) mergeY(tree[X].r ? tree[X].r : (tree[X].r = ++tn),tree[L].r,tree[R].r,mid+1,r,q);
tree[X].x=gcd2(tree[L].x,tree[R].x);
}
void updateX(int x,int l,int r,int p,int q,LL v) {
if(p<l || p>r) return ;
if(l==r){
updateY(root[x].x?root[x].x:(root[x].x=++tn),0,m-1,q,v);
return ;
}
int mid=(l+r)>>1;
if(p<=mid) updateX(root[x].l?root[x].l:(root[x].l=++rn),l,mid,p,q,v);
if(p>mid) updateX(root[x].r?root[x].r:(root[x].r=++rn),mid+1,r,p,q,v);
mergeY(root[x].x?root[x].x:(root[x].x=++tn),root[root[x].l].x,root[root[x].r].x,0,m-1,q);
}
void update(int P, int Q, long long K) {
updateX(1,0,n-1,P,Q,K);
}
LL readY(int x,int l,int r,int s,int e) {
if(!x){
return 0;
}
if(r<s || e<l){
return 0;
}
if(s <= l && r <= e){
return tree[x].x;
}
int mid = (l + r) >> 1;
return gcd2(readY(tree[x].l,l,mid,s,e),readY(tree[x].r,mid+1,r,s,e));
}
LL readX(int x,int l,int r,int sx,int sy,int ex,int ey) {
if(r<sx || ex<l) return 0;
if(sx <= l && r <= ex){
return readY(root[x].x,0,m-1,sy,ey);
}
int mid = (l + r) >> 1;
return gcd2(readX(root[x].l,l,mid,sx,sy,ex,ey),readX(root[x].r,mid+1,r,sx,sy,ex,ey));
}
long long calculate(int P, int Q, int U, int V) {
return readX(1,0,n-1,P,Q,U,V);
}
Compilation message (stderr)
grader.c: In function 'int main()':
grader.c:18:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
int res;
^~~
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