oj.uz

Submission #89538

# Submission time Handle Problem Language Result Execution time Memory
89538 2018-12-15T08:59:59 Z Harvey_Rollens Gift (IZhO18_nicegift) C++14
30 / 100
 1870 ms 93256 KB 
#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define st string
#define fr first
#define se second

const ll mod=1e9+7;

using namespace std;

set<pair<ll, ll> > a;
vector<pair<ll, vector<ll> > > v;
map<ll, ll> us;

int main()
{
    //freopen("1.txt", "r", stdin);
    //freopen("1.txt", "w", stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

    ll n, k, s=0, f;
    cin>>n>>k;

    for(ll i=1; i<=n; i++)
    {
        ll x;
        cin>>x;
        us[x]++;
        a.insert({x, i});
        f=x;
        s+=x;
    }

    if(us[f]!=n)
    {
        f=1;
    }

    if(s%k!=0)
    {
        cout<<-1;
        return 0;
    }

    while(a.size()>=k)
    {
        std::vector<ll> q;
        std::vector<pair<ll, ll> > y;

        for(ll i=1; i<=k; i++)
        {
            //cout<<i<<" "<<a.size()<<endl;
            std::pair<ll, ll> x;

            x=*a.rbegin();
            a.erase(*a.rbegin());

            q.push_back(x.se);

            x.fr-=f;
            if(x.fr)
                y.push_back(x);
        }

        for(ll i=0; i<y.size(); i++)
        {
            a.insert(y[i]);
            //cout<<"y="<<y[i].fr<<" "<<y[i].se<<endl;
        }

        v.push_back({f, q});
    }

    if(a.size()>0)
    {
        cout<<-1;
        return 0;
    }

    cout<<v.size()<<endl;
    for(ll i=0; i<v.size(); i++)
    {
        cout<<v[i].fr<<" ";
        for(ll j=0; j<v[i].se.size(); j++)
        {
            cout<<v[i].se[j]<<" ";
        }
        cout<<endl;
    }
    return 0;
}
/*
*/

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(a.size()>=k)
           ~~~~~~~~^~~
nicegift.cpp:68:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(ll i=0; i<y.size(); i++)
                     ~^~~~~~~~~
nicegift.cpp:84:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(ll i=0; i<v.size(); i++)
                 ~^~~~~~~~~
nicegift.cpp:87:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(ll j=0; j<v[i].se.size(); j++)
                     ~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 576 KB n=3
4 Correct 2 ms 576 KB n=4
5 Correct 2 ms 576 KB n=4
6 Correct 2 ms 592 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 576 KB n=3
4 Correct 2 ms 576 KB n=4
5 Correct 2 ms 576 KB n=4
6 Correct 2 ms 592 KB n=2
7 Correct 2 ms 620 KB n=5
8 Correct 7 ms 1388 KB n=8
9 Correct 34 ms 1640 KB n=14
10 Correct 22 ms 1640 KB n=11
11 Correct 147 ms 6664 KB n=50000
12 Correct 147 ms 6784 KB n=50000
13 Correct 116 ms 6784 KB n=10
14 Correct 105 ms 6784 KB n=685
15 Correct 114 ms 6784 KB n=623
16 Correct 65 ms 6784 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 576 KB n=3
4 Correct 2 ms 576 KB n=4
5 Correct 2 ms 576 KB n=4
6 Correct 2 ms 592 KB n=2
7 Correct 2 ms 620 KB n=5
8 Correct 7 ms 1388 KB n=8
9 Correct 34 ms 1640 KB n=14
10 Correct 22 ms 1640 KB n=11
11 Correct 147 ms 6664 KB n=50000
12 Correct 147 ms 6784 KB n=50000
13 Correct 116 ms 6784 KB n=10
14 Correct 105 ms 6784 KB n=685
15 Correct 114 ms 6784 KB n=623
16 Correct 65 ms 6784 KB n=973
17 Correct 92 ms 6784 KB n=989
18 Correct 45 ms 6784 KB n=563
19 Correct 37 ms 6784 KB n=592
20 Correct 42 ms 6784 KB n=938
21 Correct 36 ms 6784 KB n=747
22 Correct 38 ms 6784 KB n=991

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1870 ms 93256 KB n=1000000
2 Correct 1059 ms 93256 KB n=666666
3 Correct 525 ms 93256 KB n=400000
4 Incorrect 245 ms 93256 KB Jury has the answer but participant has not
5 Halted 0 ms 0 KB -

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 576 KB n=3
4 Correct 2 ms 576 KB n=4
5 Correct 2 ms 576 KB n=4
6 Correct 2 ms 592 KB n=2
7 Correct 2 ms 620 KB n=5
8 Correct 7 ms 1388 KB n=8
9 Correct 34 ms 1640 KB n=14
10 Correct 22 ms 1640 KB n=11
11 Correct 147 ms 6664 KB n=50000
12 Correct 147 ms 6784 KB n=50000
13 Correct 116 ms 6784 KB n=10
14 Correct 105 ms 6784 KB n=685
15 Correct 114 ms 6784 KB n=623
16 Correct 65 ms 6784 KB n=973
17 Correct 92 ms 6784 KB n=989
18 Correct 45 ms 6784 KB n=563
19 Correct 37 ms 6784 KB n=592
20 Correct 42 ms 6784 KB n=938
21 Correct 36 ms 6784 KB n=747
22 Correct 38 ms 6784 KB n=991
23 Correct 1870 ms 93256 KB n=1000000
24 Correct 1059 ms 93256 KB n=666666
25 Correct 525 ms 93256 KB n=400000
26 Incorrect 245 ms 93256 KB Jury has the answer but participant has not
27 Halted 0 ms 0 KB -