이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
#include "dungeons.h"
using namespace std;
typedef long long ll;
const int logz=12;
const int logn=25;
const int maxn=8*50000+10;
const int inf=1e7+10;
struct{
int gain,max;
int pos;
} lift[logz][logn][maxn];
ll dokraja[maxn];
int n;
vector<int> s,p;
vector<int> w,l;
void init(int nn, vector<int> ss, vector<int> pp, vector<int> ww, vector<int> ll) {
n=nn; s=ss; p=pp; w=ww; l=ll;
s.resize(n+1); p.resize(n+1); w.resize(n+1), l.resize(n+1);
s[n]=0; p[n]=0; w[n]=n; l[n]=n;
for(int bit=0;bit<logz;bit++){
for(int jump=0;jump<logn;jump++){
for(int pos=0;pos<=n;pos++){
if(jump==0){
if((1<<bit*2)>=s[pos]) lift[bit][jump][pos]={s[pos],INT_MIN,w[pos]};
else lift[bit][jump][pos]={p[pos],-s[pos],l[pos]};
}else{
lift[bit][jump][pos]={lift[bit][jump-1][pos].gain+lift[bit][jump-1][lift[bit][jump-1][pos].pos].gain,
max(lift[bit][jump-1][pos].max,lift[bit][jump-1][pos].gain+lift[bit][jump-1][lift[bit][jump-1][pos].pos].max),
lift[bit][jump-1][lift[bit][jump-1][pos].pos].pos};
if(lift[bit][jump][pos].gain>inf){
lift[bit][jump][pos].gain=inf;
lift[bit][jump][pos].max=1;
}
}
}
}
}
for(int i=n;i>=0;i--){
dokraja[i]=dokraja[w[i]]+s[i];
}
return;
}
int get_bit(ll a){
return min(63-__builtin_clzll(a),logz-1)/2;
}
long long simulate(int x, int z) {
long long res=z;
int klk=0;
while(true){
klk++;
if(res==0){
res=p[x];
x=l[x];
continue;
}
int bit=get_bit(res);
for(int jump=logn-1;jump>=0;jump--){
if(res+lift[bit][jump][x].max<0){
res+=lift[bit][jump][x].gain;
x=lift[bit][jump][x].pos;
}
}
if((1LL<<2*bit)<s[x] && res>=s[x]){
res+=s[x];
x=w[x];
}
if(res>inf){
res+=dokraja[x];
break;
}
if(x==n) break;
}
return res;
}
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