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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#592847 | #9313. Make Max | DUSK777 | WA | 0ms | 3588kb | C++14 | 1.4kb | 2024-09-27 08:52:00 | 2024-09-27 08:52:01 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll,ll>
void solu() {
ll n;
cin >> n;
vector<pll> a(n); // first为index,second为value
vector<ll> lindex(n, -1);
vector<ll> rindex(n, -1);
for (int i = 0; i < n; ++i) {
cin >> a[i].second;
a[i].first = i;
}
stack<pll> s;
// 计算右边界
for (ll i = 0; i < n; ++i) {
while (!s.empty() && a[i].second > s.top().second) {
rindex[s.top().first] = a[i].first;
s.pop();
}
s.push(a[i]);
}
while (!s.empty()) {
rindex[s.top().first] = -1;
s.pop();
}
// 计算左边界
for (ll i = n - 1; i >= 0; --i) {
while (!s.empty() && a[i].second > s.top().second) {
lindex[s.top().first] = a[i].first;
s.pop();
}
s.push(a[i]);
}
while (!s.empty()) {
lindex[s.top().first] = -1;
s.pop();
}
ll ans = 0;
for (ll i = 0; i < n; ++i) {
ll left_dist = (lindex[i] == -1) ? i : i - lindex[i] - 1;
ll right_dist = (rindex[i] == -1) ? n - i - 1 : rindex[i] - i - 1;
ans += left_dist + right_dist;
}
cout << ans << endl;
}
int main() {
ll q;
cin >> q;
while (q--) {
solu();
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3588kb
input:
4 2 1 2 2 2 2 7 1 1 1 2 2 2 2 3 1 2 3
output:
1 2 30 3
result:
wrong answer 2nd numbers differ - expected: '0', found: '2'