| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1322022 | kasamchi | 커다란 상품 (IOI17_prize) | C++20 | 2 ms | 5092 KiB |
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int>> buf;
vector<int> qry(int x) {
if (!buf[x].empty()) {
buf[x] = ask(x);
}
return buf[x];
}
int find_best(int n) {
buf.clear(), buf.resize(n);
vector<int> s(6);
for (int i = 0; i < min(n, 474); i++) {
vector<int> res = qry(i);
s[5] = max(s[5], res[0] + res[1]);
}
vector<int> pidx;
for (int i = 1; i <= s[5]; i++) {
int l = -1, r = n - 1;
while (l + 1 < r) {
int rm = l + (r - l) / 2, lm = rm;
vector<int> res = qry(lm);
while (res[0] + res[1] != s[5]) {
lm--;
if (lm < 0) {
break;
}
res = qry(lm);
}
if (lm < 0) {
if (rm + 1 < i) {
l = rm;
} else {
r = rm;
}
} else {
if (res[0] + rm - lm < i) {
l = rm;
} else {
r = rm;
}
}
}
pidx.push_back(r);
}
for (int x : pidx) {
vector<int> res = qry(x);
if (res[0] + res[1] == 0) {
return x;
}
}
}
Compilation message (stderr)
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|---|---|---|---|---|
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| # | Verdict | Execution time | Memory | Grader output |
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