| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 439884 | phathnv | Dungeons Game (IOI21_dungeons) | C++17 | 0 ms | 0 KiB |
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 <bits/stdc++.h>
using namespace std;
const int N = 4e5 + 7;
const int L = 17;
int n;
vector<int> s, p, w, l;
int nxt[L][L][N];
long long f[L][L][N], sum[L][L][N];
void init(int _n, vector<int> _s, vector<int> _p, vector<int> _w, vector<int> _l) {
n = _n;
s = _s;
p = _p;
w = _w;
l = _l;
for (int b = 0; b < L; b++) {
for (int i = 0; i < n; i++) {
nxt[b][0][i] = (s[i] <= (256 << b)? w[i] : l[i]);
sum[b][0][i] = (s[i] <= (256 << b)? s[i] : p[i]);
f[b][0][i] = (s[i] < (256 << b)? 1e18 : s[i]);
}
nxt[b][0][n] = -1;
for (int i = 1; i < L; i++)
for (int j = 0; j <= n; j++) {
nxt[b][i][j] = (nxt[b][i - 1][j] == -1? -1 : nxt[b][i - 1][nxt[b][i - 1][j]]);
if (nxt[b][i][j] != -1) {
sum[b][i][j] = sum[b][i - 1][j] + sum[b][i - 1][nxt[b][i - 1][j]];
f[b][i][j] = min(f[b][i - 1][j], f[b][i - 1][nxt[b][i - 1][j]] - sum[b][i - 1][j]);
}
}
}
return;
}
long long simulate(int x, int _z) {
long long z = _z;
while (z < 256) {
if (x == n)
return z;
if (z >= s[x]) {
z += s[x];
x = w[x];
} else {
z += p[x];
x = l[x];
}
}
for (int b = 0; b < L; b++) {
if (z >= (256 << (b + 1)))
continue;
for (int i = L - 1; i >= 0; i--) {
if (nxt[b][i][x] == -1)
continue;
if (z < f[b][i][x]) {
z += sum[b][i][x];
x = nxt[b][i][x];
}
}
if (x == n)
return z;
assert(z >= s[x]);
z += s[x];
x = w[x];
}
for (int i = L - 1; i >= 0; i--)
if (nxt[L - 1][i][x] != -1) {
z += sum[L - 1][i][x];
x = nxt[L - 1][i][x];
}
assert(x == n);
return z;
}