Submission #720933

#TimeUsernameProblemLanguageResultExecution timeMemory
720933uroskDungeons Game (IOI21_dungeons)C++17
37 / 100
7084 ms1782428 KiB
#include "dungeons.h" #include <bits/stdc++.h> #define here cerr<<"===========================================\n" #define dbg(x) cerr<<#x<<": "<<x<<endl; #define ll long long #define llinf 1000000000000000000LL #define pb push_back using namespace std; #define maxn 400005 #define lg 25 #define lg2 9 #define B 8 ll n; int a[maxn],b[maxn],w[maxn],l[maxn]; ll bs[lg2]; int st[lg2][lg][maxn]; ll sum[lg2][lg][maxn]; ll mx[lg2][lg][maxn]; void init(int N, vector<int> s, vector<int> p, vector<int> W, vector<int> L) { bs[0] = 1; for(ll i = 1;i<lg2;i++) bs[i] = bs[i-1]*B; n = N; for(ll i = 1;i<=n;i++) a[i] = s[i-1]; for(ll i = 1;i<=n;i++) b[i] = p[i-1]; for(ll i = 1;i<=n;i++) w[i] = W[i-1]+1; for(ll i = 1;i<=n;i++) l[i] = L[i-1]+1; for(ll j = 0;j<lg2;j++){ for(ll i = 1;i<=n;i++){ if(bs[j]>a[i]){ st[j][0][i] = w[i]; sum[j][0][i] = a[i]; mx[j][0][i] = llinf; }else{ st[j][0][i] = l[i]; sum[j][0][i] = b[i]; mx[j][0][i] = a[i]; } } } for(ll j = 0;j<lg2;j++){ for(ll k = 1;k<lg;k++){ for(ll i = 1;i<=n;i++){ st[j][k][i] = st[j][k-1][st[j][k-1][i]]; sum[j][k][i] = sum[j][k-1][i] + sum[j][k-1][st[j][k-1][i]]; mx[j][k][i] = min(mx[j][k-1][i],mx[j][k-1][st[j][k-1][i]]-sum[j][k-1][i]); } } } return; } long long simulate(int x, int z) { x++; ll j = 0; while(x!=n+1){ while(j+1<lg2&&bs[j+1]<=z) j++; for(ll k = lg-1;k>=0;k--){ if(st[j][k][x]==n+1) continue; if(z>=mx[j][k][x]) continue; z+=sum[j][k][x]; x = st[j][k][x]; } if(z>=a[x]){ z+=a[x]; x = w[x]; }else{ z+=b[x]; x = l[x]; } } return z; } /** 3 2 2 6 9 3 1 2 2 2 3 1 0 1 0 1 2 3 3 2 9 9 9 3 1 2 2 2 3 1 0 1 0 1 2 3 **/
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