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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#275986 | #7617. Spectacle | ddl_VS_pigeon# | WA | 1ms | 3544kb | C++20 | 1.3kb | 2023-12-05 13:36:19 | 2023-12-05 13:36:20 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
struct DSU {
vector<int> fa, sz;
DSU(int n) : fa(n + 1), sz(n + 1) {
for (int i = 0; i <= n; i++) {
fa[i] = i, sz[i] = 1;
}
}
int getfa(int v) {
return (fa[v] == v) ? v : (fa[v] = getfa(fa[v]));
}
void merge(int u, int v) {
u = getfa(u), v = getfa(v);
if (u != v) {
fa[u] = v, sz[v] += sz[u];
}
}
int getsz(int v) {
return sz[getfa(v)];
}
};
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr), cout.tie(nullptr);
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
sort(a.begin(), a.end());
struct T {
int id, len;
bool operator<(const T &b) const {
return len < b.len;
}
};
vector<T> t(n - 1);
for (int i = 0; i + 1 < n; i++) {
t[i] = {i, a[i + 1] - a[i]};
}
sort(t.begin(), t.end());
vector<int> ans(n / 2 + 1);
int cnt = 0, x = 0;
DSU dsu(n);
for (int i = 0; i + 1 < n; i++) {
int v = t[i].id;
cnt -= dsu.getsz(v) >> 1;
cnt -= dsu.getsz(v + 1) >> 1;
dsu.merge(v, v + 1);
cnt += dsu.getsz(v) >> 1;
while (x < cnt) {
ans[++x] = t[i].len;
}
}
for (int i = 1; i <= n / 2; i++) {
cout << ans[i] << ' ';
}
cout << '\n';
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3428kb
input:
6 100 13 20 14 10 105
output:
1 5 6
result:
ok single line: '1 5 6 '
Test #2:
score: -100
Wrong Answer
time: 1ms
memory: 3544kb
input:
2 1 1000000000000000000
output:
2147483646
result:
wrong answer 1st lines differ - expected: '999999999999999999', found: '2147483646 '