oj.uz

Submission #168460

# Submission time Handle Problem Language Result Execution time Memory
168460 2019-12-13T07:27:15 Z achibasadzishvili Gift (IZhO18_nicegift) C++14
30 / 100
 68 ms 20060 KB 
#include <bits/stdc++.h>
#define ll int
#define f first
#define s second
#define pb push_back
#define mp make_pair
using namespace std;
ll n,k,a[200005],s;
set<pair<ll,ll> >st;
vector<vector<ll> >ans;
vector<ll>g;
int main(){
    ios::sync_with_stdio(false);
    cin >> n >> k;

    for(int i=1; i<=n; i++){
        cin >> a[i];
        s += a[i];
        st.insert(mp(-a[i] , i));
    }

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

    ll raod = s / k;
    while(raod--){
        if((int)st.size() < k){
            cout << "-1";
            return 0;
        }
        ll p = 0;
        g.clear();
        for(set<pair<ll,ll> >::iterator it = st.begin(); it != st.end(); it++){
            p++;
            if(p > k)break;
            g.pb((*it).s);
        }
        for(int i=0; i<g.size(); i++){
            st.erase(mp(-a[g[i]] , g[i]));
            a[g[i]]--;
            if(a[g[i]])st.insert(mp(-a[g[i]] , g[i]));
        }
        ans.pb(g);
    }

    cout << (int)ans.size() << endl;

    for(int i=0; i<ans.size(); i++){
        cout << 1 << " ";
        for(int j=0; j<ans[i].size(); j++)
            cout << ans[i][j] << " ";
        cout << '\n';
    }



    return 0;
}

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<g.size(); i++){
                      ~^~~~~~~~~
nicegift.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<ans.size(); i++){
                  ~^~~~~~~~~~~
nicegift.cpp:52:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0; j<ans[i].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 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 376 KB n=4
6 Correct 2 ms 376 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 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 376 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 4 ms 1016 KB n=8
9 Correct 10 ms 1204 KB n=14
10 Correct 7 ms 1020 KB n=11
11 Correct 47 ms 5672 KB n=50000
12 Correct 44 ms 5800 KB n=50000
13 Correct 29 ms 3444 KB n=10
14 Correct 32 ms 3112 KB n=685
15 Correct 35 ms 3372 KB n=623
16 Correct 20 ms 2096 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 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 376 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 4 ms 1016 KB n=8
9 Correct 10 ms 1204 KB n=14
10 Correct 7 ms 1020 KB n=11
11 Correct 47 ms 5672 KB n=50000
12 Correct 44 ms 5800 KB n=50000
13 Correct 29 ms 3444 KB n=10
14 Correct 32 ms 3112 KB n=685
15 Correct 35 ms 3372 KB n=623
16 Correct 20 ms 2096 KB n=973
17 Correct 34 ms 2608 KB n=989
18 Correct 16 ms 1016 KB n=563
19 Correct 27 ms 1372 KB n=592
20 Correct 27 ms 1400 KB n=938
21 Correct 21 ms 1192 KB n=747
22 Correct 24 ms 1272 KB n=991

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Runtime error 68 ms 20060 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 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 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 376 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 4 ms 1016 KB n=8
9 Correct 10 ms 1204 KB n=14
10 Correct 7 ms 1020 KB n=11
11 Correct 47 ms 5672 KB n=50000
12 Correct 44 ms 5800 KB n=50000
13 Correct 29 ms 3444 KB n=10
14 Correct 32 ms 3112 KB n=685
15 Correct 35 ms 3372 KB n=623
16 Correct 20 ms 2096 KB n=973
17 Correct 34 ms 2608 KB n=989
18 Correct 16 ms 1016 KB n=563
19 Correct 27 ms 1372 KB n=592
20 Correct 27 ms 1400 KB n=938
21 Correct 21 ms 1192 KB n=747
22 Correct 24 ms 1272 KB n=991
23 Runtime error 68 ms 20060 KB Execution killed with signal 11 (could be triggered by violating memory limits)
24 Halted 0 ms 0 KB -