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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 |
---|---|---|---|---|---|---|---|---|---|
#620271 | #5278. Mex and Cards | Alorithm | WA | 0ms | 3752kb | C++17 | 2.4kb | 2024-10-07 17:16:02 | 2024-10-07 17:16:25 |
Judging History
answer
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
using i64 = long long;
using a2 = array<i64, 2>;
struct SegTree {
#define ls (p << 1)
#define rs ((p << 1) | 1)
#define mid ((l + r) >> 1)
int n;
vector<i64> mex, val;
SegTree(int N = 0) : n(N) {
mex.resize(n << 2 | 1);
val.resize(n << 2 | 1);
}
a2 query(i64 limit, int p, int l, int r) {
if (l == r)
if (val[p] <= limit)
return { mex[p], val[p] };
else
return { limit, limit };
if (val[ls] <= limit) {
auto [Mex, Val] = query(limit, ls, l, mid);
if (Val)
return { Mex + mex[rs], val[rs] };
return { Mex, Val };
} else {
auto [Mex, Val] = query(val[ls], rs, mid + 1, r);
return { limit * (mid - l + 1ll) + Mex, Val };
}
}
void update(int p, int l, int r) {
mex[p] = mex[ls];
val[p] = val[ls];
if (val[ls]) {
auto [Mex, Val] = query(val[ls], rs, mid + 1, r);
mex[p] += Mex;
val[p] = Val;
}
}
void add(int x, int k, int p, int l, int r) {
if (l == r) {
val[p] += k;
mex[p] = val[p];
// cout << p << ' ' << l << ' ' << r << ' ' << mex[p] << ' ' << val[p] << endl;
return;
}
if (x <= mid)
add(x, k, ls, l, mid);
if (mid + 1 <= x)
add(x, k, rs, mid + 1, r);
update(p, l, r);
// cout << p << ' ' << l << ' ' << r << ' ' << mex[p] << ' ' << val[p] << endl;
}
};
void solve() {
int n;
cin >> n;
SegTree tr(n);
for (int i = 1; i <= n; i++) {
int x;
cin >> x;
tr.add(i, x, 1, 1, n);
// cout << endl;
}
cout << tr.mex[1] << endl;
int q;
cin >> q;
while (q--) {
int op, x;
cin >> op >> x;
x++;
if (x <= n) {
if (op == 1)
tr.add(x, 1, 1, 1, n);
else
tr.add(x, -1, 1, 1, n);
}
// cout << endl;
cout << tr.mex[1] << endl;
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
// cin >> t;
while (t--)
solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3752kb
input:
5 2 1 3 0 2 6 1 0 1 1 2 4 1 3 2 1 2 1
output:
4 5 7 7 9 7 3
result:
ok 7 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
1 0 0
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 3584kb
input:
10 3 8 1 4 10 3 10 9 7 10 20 2 5 1 4 1 2 1 4 1 3 1 3 1 0 2 8 1 5 1 4 1 0 1 3 1 8 1 6 1 4 1 1 1 5 1 9 1 6 2 7
output:
48 47 47 49 49 50 51 53 51 52 52 54 55 57 58 58 58 59 59 60 59
result:
wrong answer 1st numbers differ - expected: '14', found: '48'