This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include "wombats.h"
using namespace std;
typedef long long ll;
int h[5000][200],v[5000][200];
int ans[5000][200][200];
int r,c;
struct node{
int r,c,d,fin;
bool operator<(const node &x)const {
return d<x.d;
}
bool operator>(const node &x)const {
return d>x.d;
}
};
void calc(){
for(int i=0;i<r;i++){
for(int j=0;j<c;j++){
for(int x=0;x<c;x++)ans[i][j][x]=-1;
}
}
priority_queue<node,vector<node>,greater<node> >q;
for(int i=0;i<c;i++)q.push({r-1,i,0,i});
while(!q.empty()){
node x=q.top();
q.pop();
if(ans[x.r][x.c][x.fin]>=0)continue;
ans[x.r][x.c][x.fin]=x.d;
if(x.c>0)q.push({x.r,x.c-1,x.d+h[x.r][x.c-1],x.fin});
if(x.c<c-1)q.push({x.r,x.c+1,x.d+h[x.r][x.c],x.fin});
if(x.r>0)q.push({x.r-1,x.c,x.d+v[x.r-1][x.c],x.fin});
}
}
void init(int R, int C, int H[5000][200], int V[5000][200]) {
for(int i=0;i<5000;i++){
for(int j=0;j<200;j++){
h[i][j]=H[i][j];
v[i][j]=V[i][j];
}
}
r=R;
c=C;
if(c<=20)calc();
}
void changeH(int P, int Q, int W) {
h[P][Q]=W;
if(c<=20)calc();
}
void changeV(int P, int Q, int W) {
v[P][Q]=W;
if(c<=20)calc();
}
bool vis[5000][200];
int escape(int V1, int V2) {
if(c<=20)return ans[0][V1][V2];
for(int i=0;i<r;i++){
for(int j=0;j<c;j++){
vis[i][j]=0;
}
}
priority_queue<node,vector<node>,greater<node> >q;
q.push({r-1,V2,0,0});
while(!q.empty()){
node x=q.top();
q.pop();
if(vis[x.r][x.c])continue;
vis[x.r][x.c]=1;
if(x.r==0 && x.c==V1)return x.d;
if(x.c>0)q.push({x.r,x.c-1,x.d+h[x.r][x.c-1],x.fin});
if(x.c<c-1)q.push({x.r,x.c+1,x.d+h[x.r][x.c],x.fin});
if(x.r>0)q.push({x.r-1,x.c,x.d+v[x.r-1][x.c],x.fin});
}
}
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;
^~~
wombats.cpp: In function 'int escape(int, int)':
wombats.cpp:77:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
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