CZYZ Training Day5 (8.11)

B-D : snowmen
Diff : Easy->Easy-Normal(3->4)
Comment :
When I see it at the first time : ???
Later : OH.
When I wirte the code : Hmm, OK.
When I see "score : 0" : ??????????
When I see "File error" : ????????????????????¿¿¿¿¿¿¿¿¿¿¿¿
When I check my SELFTEST code : ????
When I check my SUBMIT code :

#include 
using namespace std;

int main() {
    int k;cin >> k;
    map r;
    for (int i=0;i> x;
        if (r.find(x) != r.end()) r[x]++;
        else r[x] = 1;
    }
    if (r.size()second--;it3->second--;count++;
        if (it1->second second second <= 0) r.erase(it3);
    }
    cout << count;
    return 0;
}

WHAT?Where is my freopen?AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHGFDDFJHJGFGHGHGHGHHHGGHHGHHKJGHFKJDHFSJGHDGKLLDVGFDGFKKVGFK DVGF KJDHJH B GF DGFKJJHFKBH KJXCHKJ HJHFSKJDGHFKLJ NCKLBVBC……
Later : OH, NO!!!!!@!!@Q#!#!!$@ [CONNECTION LOST]