# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1086155 | duytuandao21 | Po (COCI21_po) | C++17 | 15 ms | 2628 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const int N = 2e5 + 7;
const int inf = 1e9 + 7;
const long long infll = 1e18 + 7;
int n;
int a[N], posMin[N], prePos[N];
pair<int, int> b[N];
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
b[i] = make_pair(a[i], i);
}
sort (b + 1, b + 1 + n);
int cnt = 0;
b[0].first = -1;
for (int i = 1; i <= n; i++) {
if (b[i].first != b[i - 1].first) cnt++;
a[b[i].second] = cnt;
}
stack <int> st;
int res = 0;
for (int i = 1; i <= n; i++) {
while (st.size() > 0 && a[i] < a[st.top()]) st.pop();
if ((st.size() == 0 || a[st.top()] != a[i]) && a[i] > 0) res++;
st.push(i);
}
cout << res;
return 0;
}
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---|---|---|---|---|
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