제출 #879787

#제출 시각아이디문제언어결과실행 시간메모리
879787abcvuitunggio던전 (IOI21_dungeons)C++17
50 / 100
7022 ms551256 KiB
#include "dungeons.h" #include <bits/stdc++.h> using namespace std; const int sz=24; int nxt[400001][sz][2]; long long mx[400001][sz][2],mn[400001][sz][2],sum[400001][sz][2]; vector <int> S,P; void init(int n, vector <int> s, vector <int> p, vector <int> w, vector <int> l){ S=s; P=p; memset(nxt,-1,sizeof(nxt)); for (int i=0;i<n;i++){ nxt[i][0][0]=w[i]; nxt[i][0][1]=l[i]; for (int j=0;j<2;j++) mx[i][0][j]=mn[i][0][j]=s[i]; sum[i][0][0]=s[i]; sum[i][0][1]=p[i]; } for (int j=1;j<sz;j++){ for (int i=0;i<n;i++) for (int k=0;k<2;k++){ if (nxt[i][j-1][k]==-1) continue; int u=nxt[i][j-1][k]; nxt[i][j][k]=nxt[u][j-1][k]; mx[i][j][k]=max(mx[i][j-1][k],mx[u][j-1][k]-sum[i][j-1][k]); mn[i][j][k]=min(mn[i][j-1][k],mn[u][j-1][k]-sum[i][j-1][k]); sum[i][j][k]=sum[i][j-1][k]+sum[u][j-1][k]; } } } long long simulate(int x, int Z){ int b=0; long long z=Z; while (true){ if (nxt[x][0][0]==-1) return z; for (int i=sz-1;i>=0;i--) if (nxt[x][i][b]!=-1) if ((b&&z<mn[x][i][b])||(!b&&z>=mx[x][i][b])){ z+=sum[x][i][b]; x=nxt[x][i][b]; } b^=1; } return z; }
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