Submission #337581

#	Time	Username	Problem	Language	Result	Execution time	Memory
337581		boykut	Money (IZhO17_money)	C++14	0 / 100	1 ms	364 KiB

money

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1000001;

int a[MAXN], dp[MAXN];
int ans[301][301];

bool issorted(int l, int r) {
   return r - l + 1 <= dp[r];
      
}
signed main() {
   ios::sync_with_stdio(0);
   cin.tie(0);
   
   int n;
   cin >> n;
   
   for (int i = 1; i <= n; i++) {
      cin >> a[i];
   }
   
   if (n <= 300) {
      for (int i = 1; i <= n; i++) {
         if (a[i] > a[i - 1])
            dp[i] = dp[i - 1] + 1;
         else dp[i] = 1;
      }
      set < int > st;
      int ans = 0;
      for (int i = 0; i < n; i++) {
         auto it = st.upper_bound(a[i]);
         if (it != st.end()) ans++;
         st.insert(a[i]);
      }
      
      cout << ans << '\n';
   }
   
   return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55