이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include"dungeons.h"
#include<vector>
#include<iostream>
typedef long long ll;
using namespace std;
int n;
struct Dungeon{
vector<int>nxt1; // win
vector<int>nxt2; // lose
vector<ll>st1; // strength
vector<ll>st2; // gain on losing
vector<vector<int>>jmp; // where to jump?
vector<vector<ll>>gain; // strength gain of that jump
vector<vector<int>>win; // strength requirement to win in that jump
int pw;
ll thres=0;
Dungeon(int n):nxt1(n),nxt2(n),st1(n),st2(n){}
Dungeon()=default;
void setup(){
jmp=vector<vector<int>>(n+1,vector<int>(pw));
gain=vector<vector<ll>>(n+1,vector<ll>(pw));
win=vector<vector<int>>(n+1,vector<int>(pw));
for(int p=0;p<pw;p++)
jmp[n][p]=n;
for(int i=0;i<n;i++){
jmp[i][0]=nxt2[i];
gain[i][0]=st2[i];
win[i][0]=st1[i];
}
for(int p=1;p<pw;p++){
for(int i=0;i<n;i++){
jmp[i][p]=jmp[jmp[i][p-1]][p-1];
gain[i][p]=gain[i][p-1]+gain[jmp[i][p-1]][p-1];
win[i][p]=min(win[i][p-1],win[jmp[i][p-1]][p-1]-(int)max((ll)1e9,gain[i][p-1]));
}
}
}
// simulate until it either reaches n-th node, wins, or strength>=thres
pair<int,ll>simulate(int x,ll st){
for(int p=pw;p>=0;p--){
if(jmp[x][p]!=n&&(win[x][p]>st||win[x][p]==1e9)&&st+gain[x][p]<thres){
st+=gain[x][p];
x=jmp[x][p];
}
}
// do 1 more jump
if(st>=st1[x]){
st+=st1[x];
x=nxt1[x];
}else{
st+=st2[x];
x=nxt2[x];
}
return{x,st};
}
};
Dungeon dun[30];
void init(int N,vector<int>s,vector<int>p,vector<int>w,vector<int>l){
n=N;
for(int pw=0;pw<30;pw++){
dun[pw]=Dungeon(n);
dun[pw].thres=2LL<<pw;
dun[pw].pw=pw/2+1;
for(int i=0;i<n;i++){
if(s[i]<=1<<pw){
dun[pw].nxt1[i]=0;
dun[pw].nxt2[i]=w[i];
dun[pw].st1[i]=1e9;
dun[pw].st2[i]=s[i];
}else if(s[i]>=2<<pw){
dun[pw].nxt1[i]=0;
dun[pw].nxt2[i]=l[i];
dun[pw].st1[i]=1e9;
dun[pw].st2[i]=p[i];
}else{
dun[pw].nxt1[i]=w[i];
dun[pw].nxt2[i]=l[i];
dun[pw].st1[i]=s[i];
dun[pw].st2[i]=p[i];
}
}
}
dun[29].thres=1e18;
for(int pw=0;pw<30;pw++)
dun[pw].setup();
}
ll simulate(int x,int z){
ll st=z;
for(int p=0;p<30;p++){
while(x!=n&&st<2LL<<p){
auto r=dun[p].simulate(x,st);
x=r.first;
st=r.second;
}
}
return st;
}
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