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Submission #536633

# Submission time Handle Problem Language Result Execution time Memory
536633 2022-03-13T15:44:01 Z Farhan_HY Izbori (COCI22_izbori) C++14
40 / 110
 258 ms 18008 KB 
#include <bits/stdc++.h>
#define int long long
#define float double
#define pb push_back
#define F first
#define S second
#define T int t; cin >> t; while(t--)
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const int inf = 8e18;
const int N = 1e6 + 6;
const int M = 1e3 + 3;
const int LOG = 31;
const int mod = 1e9 + 7;
const float pi = atan(1) * 4;
int n, a[N], pre[N];
map<int, int> cnt;
multiset<int> st;

main()
{
    IOS
    cin >> n;
    for(int i = 1; i <= n; i++)
        cin >> a[i];
    if (n <= 2000)
    {
        int Ans = 0;
        for(int i = 1; i <= n; i++)
        {
            for(int j = i; j <= n; j++)
            {
                if (cnt[a[j]] != 0)
                    st.erase(st.find(cnt[a[j]]));
                st.insert(++cnt[a[j]]);
                Ans += (*st.rbegin() > (j - i + 1) / 2);
            }
            cnt.clear();
            st.clear();
        }
        cout << Ans;
    }
    else
    {
        for(int i = 1; i <= n; i++)
        {
            if (a[i] == 2)
                pre[i] = pre[i - 1] - 1;
            else
                pre[i] = pre[i - 1] + 1;
            cnt[pre[i]]++;
        }
        int Ans = n * (n + 1) / 2;
        for(int i = 1; i <= n; i++)
        {
            Ans -= cnt[pre[i - 1]];
            cnt[pre[i]]--;
        }
        cout << Ans;
    }
}

Compilation message

Main.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main()
      | ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 4 ms 212 KB Output is correct
5 Correct 4 ms 340 KB Output is correct
6 Correct 3 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 4 ms 212 KB Output is correct
5 Correct 4 ms 340 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 108 ms 428 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 257 ms 360 KB Output is correct
10 Correct 247 ms 340 KB Output is correct
11 Correct 258 ms 356 KB Output is correct
12 Correct 250 ms 352 KB Output is correct
13 Correct 250 ms 340 KB Output is correct
14 Correct 235 ms 352 KB Output is correct
15 Correct 251 ms 352 KB Output is correct
16 Correct 246 ms 352 KB Output is correct
17 Correct 90 ms 340 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 2388 KB Output is correct
2 Correct 17 ms 3028 KB Output is correct
3 Correct 15 ms 1872 KB Output is correct
4 Correct 25 ms 3176 KB Output is correct
5 Correct 19 ms 3224 KB Output is correct
6 Correct 23 ms 3540 KB Output is correct
7 Correct 23 ms 3480 KB Output is correct
8 Correct 28 ms 3524 KB Output is correct
9 Correct 22 ms 3520 KB Output is correct
10 Correct 22 ms 3424 KB Output is correct
11 Correct 88 ms 15964 KB Output is correct

Subtask #4
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 4 ms 212 KB Output is correct
5 Correct 4 ms 340 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 108 ms 428 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 257 ms 360 KB Output is correct
10 Correct 247 ms 340 KB Output is correct
11 Correct 258 ms 356 KB Output is correct
12 Correct 250 ms 352 KB Output is correct
13 Correct 250 ms 340 KB Output is correct
14 Correct 235 ms 352 KB Output is correct
15 Correct 251 ms 352 KB Output is correct
16 Correct 246 ms 352 KB Output is correct
17 Correct 90 ms 340 KB Output is correct
18 Correct 15 ms 2388 KB Output is correct
19 Correct 17 ms 3028 KB Output is correct
20 Correct 15 ms 1872 KB Output is correct
21 Correct 25 ms 3176 KB Output is correct
22 Correct 19 ms 3224 KB Output is correct
23 Correct 23 ms 3540 KB Output is correct
24 Correct 23 ms 3480 KB Output is correct
25 Correct 28 ms 3524 KB Output is correct
26 Correct 22 ms 3520 KB Output is correct
27 Correct 22 ms 3424 KB Output is correct
28 Correct 88 ms 15964 KB Output is correct
29 Correct 110 ms 18008 KB Output is correct
30 Incorrect 17 ms 3548 KB Output isn't correct
31 Halted 0 ms 0 KB -