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 <bits/stdc++.h>
using namespace std ;
const int MAX = 5e4 + 10 ;
int a[MAX] , b[MAX] ;
int n , m , q ;
int table_row[MAX][20] , table_col[MAX][20] ;
int lg[MAX] ;
void preprocess()
{
int sz = max(n , m) ;
lg[1] = 0 ;
for(int i = 2 ; i <= sz ; ++i)
lg[i] = lg[i/2] + 1 ;
for(int i = 1 ; i <= sz ; ++i)
table_row[i][0] = a[i] , table_col[i][0] = b[i] ;
for(int j = 1 ; (1 << j) <= sz ; ++j)
{
for(int i = 1 ; i + (1 << j) - 1 <= sz ; ++i)
{
table_row[i][j] = max(table_row[i][j-1] , table_row[i + (1 << (j-1))][j-1]) ;
table_col[i][j] = max(table_col[i][j-1] , table_col[i + (1 << (j-1))][j-1]) ;
}
}
}
int Range_Row_Max(int l , int r)
{
if(l > r)
return 0 ;
int k = lg[r-l+1] ;
return max(table_row[l][k] , table_row[r - (1 << k) + 1][k]) ;
}
int Range_Col_Max(int l , int r)
{
if(l > r)
return 0 ;
int k = lg[r-l+1] ;
return max(table_col[l][k] , table_col[r - (1 << k) + 1][k]) ;
}
int FindLeft(int i , int j)
{
if(i < 1 || i > n || j < 1 || j > m)
return -1 ;
int l = 1 , r = j-1 ;
int idx = -1 ;
while(l <= r)
{
int mid = (l + r) >> 1 ;
if(Range_Col_Max(mid , j-1) > a[i])
idx = mid , l = mid+1 ;
else
r = mid-1 ;
}
return idx ;
}
int FindRight(int i , int j)
{
if(i < 1 || i > n || j < 1 || j > m)
return -1 ;
int l = j+1 , r = m ;
int idx = -1 ;
while(l <= r)
{
int mid = (l + r) >> 1 ;
if(Range_Col_Max(j+1 , mid) > a[i])
idx = mid , r = mid-1 ;
else
l = mid+1 ;
}
return idx ;
}
int FindUp(int i , int j)
{
if(i < 1 || i > n || j < 1 || j > m)
return -1 ;
int l = 1 , r = i-1 ;
int idx = -1 ;
while(l <= r)
{
int mid = (l + r) >> 1 ;
if(Range_Row_Max(mid , i-1) > b[j])
idx = mid , l = mid+1 ;
else
r = mid-1 ;
}
return idx ;
}
int FindDown(int i , int j)
{
if(i < 1 || i > n || j < 1 || j > m)
return -1 ;
int l = i+1 , r = n ;
int idx = -1 ;
while(l <= r)
{
int mid = (l + r) >> 1 ;
if(Range_Row_Max(i+1 , mid) > b[j])
idx = mid , r = mid-1 ;
else
l = mid+1 ;
}
return idx ;
}
vector< pair<int , int> >vp ;
vector< pair<int , long long> >vr[MAX] , vc[MAX] ;
long long solve(int i , int j)
{
for(int i = 1 ; i <= max(n , m) ; ++i)
vr[i].clear() , vc[i].clear() ;
long long ans = 0 ;
//preprocess some points
int j2 = FindLeft(i , j) ;
if(j2 == -1)
ans = max(ans , 1ll*j-1) ;
else
vc[j2].emplace_back(i , j-j2) ;
j2 = FindRight(i , j) ;
if(j2 == -1)
ans = max(ans , 1ll*m-j) ;
else
vc[j2].emplace_back(i , j2-j) ;
int i2 = FindUp(i , j) ;
if(i2 == -1)
ans = max(ans , 1ll*i-1) ;
else
vr[i2].emplace_back(j , i-i2) ;
i2 = FindDown(i , j) ;
if(i2 == -1)
ans = max(ans , 1ll*n-i) ;
else
vr[i2].emplace_back(j , i2-i) ;
//Answer
for(auto &p : vp)
{
if(p.second > 0)
{
i2 = p.second ;
sort(vr[i2].begin() , vr[i2].end()) ;
//Add to right columns
long long prv = 2e9 , Max = -1e9 ;
for(auto &p2 : vr[i2])
{
if(Range_Col_Max(prv+1 , p2.first-1) > a[i2])
{
j2 = FindRight(i2 , prv) ;
vc[j2].emplace_back(i2 , Max + j2 - prv) ;
Max = p2.second ;
}
else
Max = max(p2.second , Max + p2.first-prv) ;
prv = p2.first ;
}
j2 = FindRight(i2 , prv) ;
if(j2 == -1)
ans = max(ans , Max + m - prv) ;
else
vc[j2].emplace_back(i2 , Max + j2 - prv) ;
//Add to left columns
reverse(vc[j2].begin() , vc[j2].end()) ;
prv = -2e9 , Max = -1e9 ;
for(auto &p2 : vr[i2])
{
if(Range_Col_Max(p2.first+1 , prv-1) > a[i2])
{
j2 = FindLeft(i2 , prv) ;
vc[j2].emplace_back(i2 , Max + prv - j2) ;
Max = p2.second ;
}
else
Max = max(p2.second , Max + prv - p2.first) ;
prv = p2.first ;
}
j2 = FindLeft(i2 , prv) ;
if(j2 == -1)
ans = max(ans , Max + prv - 1) ;
else
vc[j2].emplace_back(i2 , Max + prv - j2) ;
}
else
{
j2 = -1 * p.second ;
sort(vc[j2].begin() , vc[j2].end()) ;
//Add to down rows
long long prv = 2e9 , Max = -1e9 ;
for(auto &p2 : vc[j2])
{
if(Range_Row_Max(prv+1 , p2.first-1) > b[j2])
{
i2 = FindDown(prv , j2) ;
vr[i2].emplace_back(j2 , Max + i2 - prv) ;
Max = p2.second ;
}
else
Max = max(p2.second , Max + p2.first-prv) ;
prv = p2.first ;
}
i2 = FindDown(prv , j2) ;
if(i2 == -1)
ans = max(ans , Max + n - prv) ;
else
vr[i2].emplace_back(j2 , Max + i2 - prv) ;
//Add to up columns
reverse(vc[j2].begin() , vc[j2].end()) ;
prv = -2e9 , Max = -1e9 ;
for(auto &p2 : vc[j2])
{
if(Range_Row_Max(p2.first+1 , prv-1) > b[j2])
{
i2 = FindLeft(prv , j2) ;
vr[i2].emplace_back(j2 , Max + prv - i2) ;
Max = p2.second ;
}
else
Max = max(p2.second , Max + prv - p2.first) ;
prv = p2.first ;
}
i2 = FindUp(prv , j2) ;
if(i2 == -1)
ans = max(ans , Max + prv - 1) ;
else
vr[i2].emplace_back(j2 , Max + prv - i2) ;
}
}
return ans ;
}
int main()
{
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
cin>>n>>m>>q ;
for(int i = 1 ; i <= n ; ++i)
cin>>a[i] ;
for(int i = 1 ; i <= m ; ++i)
cin>>b[i] ;
for(int i = 1 ; i <= n ; ++i)
vp.emplace_back(a[i] , i) ;
for(int i = 1 ; i <= m ; ++i)
vp.emplace_back(b[i] , -i) ;
sort(vp.begin() , vp.end()) ;
preprocess() ;
while(q--)
{
int i , j ;
cin>>i>>j ;
cout<<solve(i , j)<<"\n" ;
}
return 0 ;
}
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