| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1335510 | kawhiet | Gift Boxes (EGOI25_giftboxes) | C++20 | 73 ms | 4312 KiB |
#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t, n;
cin >> t >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
auto get = [&](int k) {
vector<int> cnt(t);
int res = 0;
auto add = [&](int x) {
if (cnt[x] == 0) {
res++;
} else if (cnt[x] == 1) {
res--;
}
cnt[x]++;
};
auto rem = [&](int x) {
if (cnt[x] == 1) {
res--;
} else if (cnt[x] == 2) {
res++;
}
cnt[x]--;
};
for (int i = k; i < n; i++) {
add(a[i]);
}
if (res == n - k) {
return vector<int>({0, k - 1});
}
int l = 0, r = k - 1;
for (int i = k; i < n; i++) {
rem(a[i]);
add(a[i - k]);
l++; r++;
if (res == n - k) {
return vector<int>({l, r});
}
}
return vector<int>({-1, -1});
};
vector<int> ans;
int l = 0, r = n;
while (l + 1 < r) {
int m = (l + r) / 2;
auto p = get(m);
if (p[0] != -1) {
ans = p;
r = m;
} else {
l = m;
}
}
cout << ans[0] << ' ' << ans[1] << '\n';
return 0;
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