| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1126542 | Zbyszek99 | Dungeons Game (IOI21_dungeons) | C++20 | 0 ms | 0 KiB |
#include "dungeons.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define siz(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
//mt19937 mt;void random_start(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
//ll rand(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+7;
int P[16];
struct jump_str
{
int v;
ll sum;
ll ile;
};
jump_str jump[16][400001][16];
int l[400001];
int w[400001];
ll win_cost[400001];
int n;
jump_str merge_jumps(jump_str s1, jump_str s2)
{
jump_str ans;
ans.v = s2.v;
ans.sum = s1.sum + s2.sum;
ans.ile = min(s1.ile,s2.ile - s1.sum);
return ans;
}
pll find_next_lose(int v, ll s, int p)
{
for(int i = 15; i >= 0; i--)
{
//cout << v << " " << s << " " << jump[p][v][i].v << " " << jump[p][v][i].ile << " " << jump[p][v][i].sum << " " << i << " " << p << " jump\n";
if(jump[p][v][i].ile > s)
{
s += (ll)jump[p][v][i].sum;
v = jump[p][v][i].v;
}
//cout << v << " " << s << " " << jump[p][v][i].v << " " << jump[p][v][i].ile << " " << jump[p][v][i].sum << " " << i << " jump\n";
if(jump[p][v][i].ile > s)
{
s += (ll)jump[p][v][i].sum;
v = jump[p][v][i].v;
}
}
//cout << v << " " << l[v] << " lost\n";
return {w[v],s + win_cost[v]};
}
int find_seg(ll x)
{
rep(i,16)
{
if(x < P[i])
{
return i-1;
}
}
return 15;
}
void init(int N, vector<int> s, vector<int> p, vector<int> W, vector<int> L)
{
n = N;
rep(i,n)
{
l[i] = L[i];
w[i] = W[i];
win_cost[i] = s[i];
}
w[n] = n;
l[n] = n;
P[0] = 1;
rep2(i,1,15)
{
P[i] = P[i-1] * 3;
}
rep(i,16)
{
rep(v,n)
{
if(s[v] <= P[i])
{
jump[i][v][0] = {w[v],s[v],INF_L};
}
else
{
jump[i][v][0] = {l[v],p[v],s[v]};
}
}
jump[i][n][0] = {n,0,INF_L};
rep2(j,1,15)
{
rep(v,n+1)
{
jump_str new_jump = merge_jumps(jump[i][v][j-1],jump[i][jump[i][v][j-1].v][j-1]);
new_jump = merge_jumps(new_jump,jump[i][new_jump.v][j-1]);
jump[i][v][j] = new_jump;
}
}
}
}
ll simulate(int v, int Z)
{
ll z = Z;
while(v != n)
{
int seg = find_seg(z);
//cout << v << " " << z << " " << seg << " jumping\n";
pll nex = find_next_lose(v,z,seg);
v = nex.ff;
z = nex.ss;
//cout << v << " " << z << " " << seg << " jumping\n";
}
return z;
}