Submission #1269167

#	Time	Username	Problem	Language	Result	Execution time	Memory
1269167		nguyenhuythach	Izbori (COCI22_izbori)	C++20	25 / 110	15 ms	1348 KiB

Main

#include<bits/stdc++.h>
#define int long long
#define ll long long
#define pii pair<int,int>
#define fi first
#define se second
#define L LLONG_MAX
#define FOR(i,j,k) for(int i=j;i<=k;i++)
#define REP(i,k,j) for(int i=k;i>=j;i--)
#define FORD(i,a) for(auto i:a)
#define sz(a) (int)a.size()
using namespace std;
const int nmax=2e5+69;
int n,crr=0;
int a[nmax];

void compress()
{
    set<int> s;
    map<int,int> mp;
    FOR(i,1,n) s.insert(a[i]);
    FORD(i,s) mp[i]=++crr;
    FOR(i,1,n) a[i]=mp[a[i]];
}

void input()
{
    cin >> n;
    FOR(i,1,n) cin >> a[i];
    compress();
}

namespace sub2
{
    int cnt[nmax];

    bool check()
    {
        return n<=2000;
    }

    void solve()
    {
        int ans=0;
        FOR(l,1,n)
        {
            int mx=0;
            FOR(r,l,n)
            {
                mx=max(mx,++cnt[a[r]]);
                if(mx>(r-l+1)/2) ans++;
            }
            FOR(i,l,n) cnt[a[i]]--;
        }
        cout << ans;
    }
}

signed main()
{
    //freopen(".inp", "r", stdin);
    //freopen(".out", "w", stdout);
    //ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    input();
    if(sub2::check()) return sub2::solve(),0;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 70