gw.java:1: error: illegal character: '#'
#include <iostream>
^
gw.java:1: error: class, interface, or enum expected
#include <iostream>
         ^
gw.java:2: error: illegal character: '#'
#include <algorithm>
^
gw.java:3: error: illegal character: '#'
#include <vector>
^
gw.java:4: error: illegal character: '#'
#include <map>
^
gw.java:8: error: illegal character: '#'
#define ll long long
^
gw.java:8: error: class, interface, or enum expected
#define ll long long
        ^
gw.java:9: error: illegal character: '#'
#define fff(i, a, b) for(ll i = a; i < b; i++)
^
gw.java:9: error: class, interface, or enum expected
#define fff(i, a, b) for(ll i = a; i < b; i++)
                                   ^
gw.java:9: error: class, interface, or enum expected
#define fff(i, a, b) for(ll i = a; i < b; i++)
                                          ^
gw.java:11: error: illegal character: '#'
#define MAXN 1000006
^
gw.java:14: error: class, interface, or enum expected
map<ll, ll> cntOf, curCnt;
^
gw.java:16: error: class, interface, or enum expected
int main(){
^
gw.java:17: error: class, interface, or enum expected
    ll n; cin >> n;
          ^
gw.java:18: error: class, interface, or enum expected
    vector<pair<ll, ll>> v;
    ^
gw.java:19: error: class, interface, or enum expected
    fff(i, 0, n){
    ^
gw.java:20: error: class, interface, or enum expected
        ll a; cin >> a;
              ^
gw.java:21: error: class, interface, or enum expected
        cntOf[a]++;
        ^
gw.java:22: error: class, interface, or enum expected
        v.emplace_back(a, i+1);
        ^
gw.java:23: error: class, interface, or enum expected
    }
    ^
gw.java:28: error: class, interface, or enum expected
    ll best = 0;
    ^
gw.java:29: error: class, interface, or enum expected
    ll cur = 0;
    ^
gw.java:30: error: class, interface, or enum expected
    fff(i, 0, n){
    ^
gw.java:32: error: class, interface, or enum expected
        curCnt[h]++;
        ^
gw.java:33: error: class, interface, or enum expected
        sim[j] = 1;
        ^
gw.java:34: error: class, interface, or enum expected
        cur++;
        ^
gw.java:35: error: class, interface, or enum expected
        if (sim[j+1]) cur--;
        ^
gw.java:36: error: class, interface, or enum expected
        if (sim[j-1]) cur--;
        ^
gw.java:37: error: class, interface, or enum expected
        if (curCnt[h] == cntOf[h] && cur > best) best = cur;
        ^
gw.java:38: error: class, interface, or enum expected
    }
    ^
gw.java:40: error: class, interface, or enum expected
}
^
31 errors