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 "dungeons.h"
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
typedef long long int llint;
vector <llint> s1,p1,w1,l1;
llint nxtl[50005][35],nxtw[50005][35],sum[50005][35],sumw[50005][35];
llint n1,b1=1;
void init(int n,std::vector<int> s,std::vector<int> p,std::vector<int> w,std::vector<int> l) {
n1=n;
for(int i=0;i<n;i++) {
s1.push_back(s[i]);
p1.push_back(p[i]);
w1.push_back(w[i]);
l1.push_back(l[i]);
}
nxtl[n][0]=n;
nxtw[n][0]=n;
for(int i=0;i<n;i++) {
nxtl[i][0]=l[i];
nxtw[i][0]=w[i];
sum[i][0]=p[i];
sumw[i][0]=s[i];
if(i<n-1 && s[i]!=s[i+1]) b1=0;
}
for(int i=1;i<30;i++) {
for(int j=0;j<=n;j++) {
nxtl[j][i]=nxtl[nxtl[j][i-1]][i-1];
nxtw[j][i]=nxtw[nxtw[j][i-1]][i-1];
sum[j][i]=sum[j][i-1]+sum[nxtl[j][i-1]][i-1];
sumw[j][i]=sumw[j][i-1]+sumw[nxtw[j][i-1]][i-1];
}
}
return;
}
pair <int,llint> get(int x,int v) {
llint ret=0;
for(int i=0;i<30;i++) {
if(v & (1 << i)) {
ret+=sum[x][i];
x=nxtl[x][i];
}
}
return make_pair(x,ret);
}
long long simulate(int x, int z) {
if(b1) {
llint lo=0,hi=1e9;
while(lo<hi) {
llint mid=(lo+hi)/2;
//cout << lo << " " << hi << " " << mid << " " << get(x,mid).first << " " << get(x,mid).second << "\n";
if(z+get(x,mid).second>=s1[get(x,mid).first]) hi=mid;
else lo=mid+1;
}
llint ret=get(x,lo).second;
x=get(x,lo).first;
//cout << ret << "\n";
for(int i=0;i<30;i++) {
if((n1-x) & (1 << i)) {
ret+=sumw[x][i];
x=nxtw[x][i];
}
}
return z+ret;
}
llint ret=z;
while(x!=n1) {
if(ret<s1[x]) {
ret+=p1[x];
x=l1[x];
}
else {
ret+=s1[x];
x=w1[x];
}
}
return ret;
}
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