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Submission #379004

# Submission time Handle Problem Language Result Execution time Memory
379004 2021-03-17T08:18:23 Z wiwiho Gift (IZhO18_nicegift) C++14
100 / 100
 792 ms 104728 KB 
#include <bits/stdc++.h>

#define mp make_pair
#define F first
#define S second
#define eb emplace_back
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}

using namespace std;

typedef long long ll;

using pll = pair<ll, ll>;
using pii = pair<int, int>;

const ll MAX = 1LL << 60;

ostream& operator<<(ostream& o, pll p){
    return o << '(' << p.F << ',' << p.S << ')';
}

ll iceil(ll a, ll b){
    return (a + b - 1) / b;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    
    int n, k;
    cin >> n >> k;

    vector<ll> pos(n + 1), a(n + 1);
    ll sum = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        sum += a[i];
    }

    if(sum % k){
        cout << "-1\n";
        return 0;
    }
    ll len = sum / k;

    ll now = 0;
    vector<ll> t;
    for(int i = 1; i <= n; i++){
        if(a[i] > len){
            cout << "-1\n";
            return 0;
        }
        now += a[i];
        pos[i] = (now - 1) % len;
        t.eb(pos[i]);
    }

    sort(t.begin(), t.end());
    t.resize(unique(t.begin(), t.end()) - t.begin());
    len = t.size();

    vector<vector<int>> ans(len);
    int j = -1;
    for(int i = 1; i <= n; i++){
        int id = lower_bound(t.begin(), t.end(), pos[i]) - t.begin();
        for(j = (j + 1) % len; ; j = (j + 1) % len){
            ans[j].eb(i);
            if(j == id) break;
        }
    }

    cout << len << "\n";
    ll lst = -1;
    for(int i = 0; i < len; i++){
        cout << t[i] - lst << " " ;
        printv(ans[i], cout);
        lst = t[i];
    }

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 1 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 4460 KB n=50000
12 Correct 27 ms 4332 KB n=50000
13 Correct 0 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 1 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 4460 KB n=50000
12 Correct 27 ms 4332 KB n=50000
13 Correct 0 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973
17 Correct 1 ms 492 KB n=989
18 Correct 1 ms 492 KB n=563
19 Correct 2 ms 492 KB n=592
20 Correct 3 ms 492 KB n=938
21 Correct 2 ms 492 KB n=747
22 Correct 2 ms 492 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 631 ms 65668 KB n=1000000
2 Correct 302 ms 36176 KB n=666666
3 Correct 173 ms 19420 KB n=400000
4 Correct 395 ms 44612 KB n=285714
5 Correct 7 ms 1008 KB n=20000
6 Correct 345 ms 38628 KB n=181818
7 Correct 4 ms 768 KB n=10000
8 Correct 38 ms 4460 KB n=6666
9 Correct 3 ms 492 KB n=4000
10 Correct 202 ms 21356 KB n=2857
11 Correct 1 ms 364 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 1 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 4460 KB n=50000
12 Correct 27 ms 4332 KB n=50000
13 Correct 0 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973
17 Correct 1 ms 492 KB n=989
18 Correct 1 ms 492 KB n=563
19 Correct 2 ms 492 KB n=592
20 Correct 3 ms 492 KB n=938
21 Correct 2 ms 492 KB n=747
22 Correct 2 ms 492 KB n=991
23 Correct 631 ms 65668 KB n=1000000
24 Correct 302 ms 36176 KB n=666666
25 Correct 173 ms 19420 KB n=400000
26 Correct 395 ms 44612 KB n=285714
27 Correct 7 ms 1008 KB n=20000
28 Correct 345 ms 38628 KB n=181818
29 Correct 4 ms 768 KB n=10000
30 Correct 38 ms 4460 KB n=6666
31 Correct 3 ms 492 KB n=4000
32 Correct 202 ms 21356 KB n=2857
33 Correct 1 ms 364 KB n=2000
34 Correct 16 ms 2544 KB n=23514
35 Correct 16 ms 2544 KB n=23514
36 Correct 1 ms 364 KB n=940
37 Correct 1 ms 364 KB n=2
38 Correct 100 ms 13032 KB n=100000
39 Correct 101 ms 13032 KB n=100000
40 Correct 1 ms 364 KB n=10
41 Correct 1 ms 364 KB n=100
42 Correct 6 ms 876 KB n=1000
43 Correct 660 ms 100432 KB n=1000000
44 Correct 792 ms 104728 KB n=1000000
45 Correct 588 ms 74192 KB n=666666
46 Correct 460 ms 55772 KB n=400000
47 Correct 203 ms 19320 KB n=2336
48 Correct 383 ms 44636 KB n=285714
49 Correct 335 ms 38628 KB n=181818
50 Correct 239 ms 25068 KB n=40000
51 Correct 231 ms 22768 KB n=20000
52 Correct 210 ms 21112 KB n=10000
53 Correct 205 ms 24044 KB n=6666
54 Correct 199 ms 18156 KB n=4000
55 Correct 205 ms 21356 KB n=2857
56 Correct 205 ms 17132 KB n=2000