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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 |
---|---|---|---|---|---|---|---|---|---|
#647769 | #5459. Goose, goose, DUCK? | Repeater# | WA | 0ms | 7108kb | C++20 | 2.6kb | 2024-10-17 15:37:39 | 2024-10-17 15:37:40 |
Judging History
answer
#include<iostream>
using namespace std;
#include<vector>
#include<algorithm>
using i64 = long long;
struct Node{
int l, r, mark, cnt;
Node(): l(0), r(0), mark(0), cnt(0) {}
};
vector<Node> node;
void build(int l, int r, int idx = 1){
node[idx].l = l, node[idx].r = r;
if(l == r) return;
int mid = (l + r) >> 1;
build(l, mid, idx << 1);
build(mid + 1, r, idx << 1 | 1);
return;
}
void pushup(int idx){
if(node[idx].mark != 0){
node[idx].cnt = node[idx].r - node[idx].l + 1;
}
else{
node[idx].cnt = node[idx << 1].cnt + node[idx << 1 | 1].cnt;
}
return;
}
void pushdown(int idx){
if(node[idx].mark == 0) return;
int idl = idx << 1, idr = idx << 1 | 1;
node[idl].mark += node[idx].mark, node[idr].mark += node[idx].mark;
}
void update(int l, int r, int v, int idx = 1){
int tl = node[idx].l, tr = node[idx].r;
if(l <= tl && tr <= r){
node[idx].mark += v;
if(tl == tr){
if(node[idx].mark == 0) node[idx].cnt = 0;
else node[idx].cnt = 1;
}
else{
pushup(idx);
}
return;
}
if(tr < l || r < tl) return;
//pushdown(idx);
int mid = (tl + tr) >> 1;
if(mid >= l) update(l, r, v, idx << 1);
if(mid < r) update(l, r, v, idx << 1 | 1);
pushup(idx);
return;
}
int query(int l, int r, int idx = 1){
int tl = node[idx].l, tr = node[idx].r;
if(l <= tl && tr <= r) return node[idx].cnt;
int ans = 0;
if(tr < l || r < tl) return 0;
//pushdown(idx);
int mid = (tl + tr) >> 1;
if(mid >= l) ans += query(l, r, idx << 1);
if(mid < r) ans += query(l, r, idx << 1 | 1);
if(node[idx].mark != 0) ans = 0;
return ans;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, k;
cin >> n >> k;
node.resize(n << 2 | 1);
build(1, n);
vector<int> a(n + 1);
for(int i = 1; i <= n; ++i) cin >> a[i];
int mn = *max_element(a.begin() + 1, a.end());
vector<int> last(n + 1), lasta(mn + 1);
for(int i = 1; i <= n; ++i){
last[i] = lasta[a[i]];
lasta[a[i]] = i;
}
vector<int> lastk(n + 1);
for(int i = 1; i <= n; ++i){
if(lasta[i] == 0) continue;
int p = lasta[i];
for(int j = 0; j < k - 1 && p != 0; ++j){
p = last[p];
}
int tp = lasta[i];
while(p != 0){
lastk[tp] = p;
p = last[p];
tp = last[tp];
}
}
i64 ans = 0;
for(int i = 1; i <= n; ++i){
if(lastk[i] != 0){
int p = last[i];
if(lastk[p] != 0) update(lastk[last[p]] + 1, lastk[p], -1);
update(lastk[p] + 1, lastk[i], 1);
//cout << i << " " << lastk[p] + 1 << " " << lastk[i] << "\n";
}
//cout << i - query(1, i) << "\n";
ans += i - query(1, i);
}
cout << ans << "\n";
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3528kb
input:
6 2 1 2 2 1 3 3
output:
10
result:
ok 1 number(s): "10"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
6 1 1 2 3 4 5 6
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 7108kb
input:
100 10 142826 764475 142826 986320 764475 142826 142826 986320 764475 986320 764475 764475 764475 142826 142826 986320 764475 986320 764475 764475 142826 764475 142826 764475 986320 986320 764475 142826 764475 764475 142826 764475 764475 986320 142826 142826 142826 142826 764475 986320 986320 764475...
output:
5050
result:
wrong answer 1st numbers differ - expected: '4309', found: '5050'