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>
#include "wombats.h"
using namespace std;
struct Node {
int arr[200][200];
};
int r,c;
const int bs=70;
Node merge(Node l,Node r) {
int opt[200][200];
Node ret;
for(int diff=-c+1;diff<=c-1;diff++) {
for(int i=max(-diff,0);i<min(c-diff,c);i++) {
int j=i+diff;
int st;
if (j==0) {
st=0;
}
else {
st=opt[i][j-1];
}
int en;
if (i==c-1) {
en=c-1;
}
else {
en=opt[i+1][j];
}
int mini=2e9;
for(int k=st;k<=en;k++) {
if (l.arr[i][k]+r.arr[k][j]<mini) {
opt[i][j]=k;
mini=l.arr[i][k]+r.arr[k][j];
}
}
ret.arr[i][j]=mini;
}
}
return ret;
}
Node tp;
Node arr[72];
int h[5000][199];
int v[4999][200];
void update(int node,int nodel,int noder) {
for(int st=0;st<c;st++) {
int dist[200];
dist[st]=0;
for(int i=st-1;i>=0;i--) {
dist[i]=dist[i+1]+h[nodel][i];
}
for(int i=st+1;i<c;i++) {
dist[i]=dist[i-1]+h[nodel][i-1];
}
for(int i=nodel+1;i<=noder;i++) {
for(int j=0;j<c;j++) {
dist[j]=dist[j]+v[i-1][j];
}
for(int j=1;j<c;j++) {
dist[j]=min(dist[j],dist[j-1]+h[i][j-1]);
}
for(int j=c-2;j>=0;j--) {
dist[j]=min(dist[j],dist[j+1]+h[i][j]);
}
}
for(int i=0;i<c;i++) {
arr[node].arr[st][i]=dist[i];
}
}
}
void init(int rr,int cc,int hh[][200],int vv[][200]) {
r=rr;
c=cc;
for(int i=0;i<r;i++) {
for(int j=0;j<c-1;j++) {
h[i][j]=hh[i][j];
}
}
for(int i=0;i<r-1;i++) {
for(int j=0;j<c;j++) {
v[i][j]=vv[i][j];
}
}
for(int i=0;i<=(r-1)/bs;i++) {
update(i,i*bs,min(i*bs+bs,r-1));
}
tp=arr[0];
for(int i=1;i<=(r-1)/bs;i++) {
tp=merge(tp,arr[i]);
}
}
void changeH(int p,int q,int w) {
h[p][q]=w;
if (p%bs==0&&p!=0) {
update(p/bs-1,(p/bs-1)*bs,(p/bs-1)*bs+bs);
update(p/bs,p,min(p+bs,r-1));
}
else {
update(p/bs,(p/bs)*bs,min((p/bs)*bs+bs,r-1));
}
tp=arr[0];
for(int j=1;j<=(r-1)/bs;j++) {
tp=merge(tp,arr[j]);
}
}
void changeV(int p,int q,int w) {
v[p][q]=w;
update(p/bs,(p/bs)*bs,min((p/bs)*bs+bs,r-1));
tp=arr[0];
for(int j=1;j<=(r-1)/bs;j++) {
tp=merge(tp,arr[j]);
}
}
int escape(int v1,int v2) {
return tp.arr[v1][v2];
}
Compilation message (stderr)
grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
int res;
^~~
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