oj.uz

Submission #50854

# Submission time Handle Problem Language Result Execution time Memory
50854 2018-06-13T17:04:04 Z Nicksechko Gift (IZhO18_nicegift) C++14
100 / 100
 748 ms 208224 KB 
#include <bits/stdc++.h>
using ll = long long;
using ld = long double;
using namespace std;

const int MAXN = 2000001;

vector<vector<ll>> ans;
vector<pair<int, ll>> g[MAXN];

ll a[MAXN];

int main() {
#ifdef PAUNSVOKNO
    freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(false); cout.setf(ios::fixed); cout.precision(20); cout.tie(nullptr); cin.tie(nullptr);
    int n, k;
    cin >> n >> k;
    ll s = 0;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        s += a[i];
    }

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

    int cur = 0;
    s /= k;

    ll left = s;

    for (int i = 1; i <= n; ++i) {
        if (a[i] > s) {
            return cout << -1 << "\n", 0;
        }

        if (a[i] >= left) {
            g[cur++].emplace_back(i, left);
            if (a[i] != left) {
                g[cur].emplace_back(i, a[i] - left);
            }

            left += (s - a[i]);
        } else {
            g[cur].emplace_back(i, a[i]);
            left -= a[i];
        }
    }

    while (!g[0].empty()) {
        ll x = (1ll << 60);
        ans.emplace_back(k + 1);

        for (int i = 0; i < k; ++i) {
            ans.back()[i + 1] = g[i].back().first;
            x = min(x, g[i].back().second);
        }

        ans.back()[0] = x;
        for (int i = 0; i < k; ++i) {
            if (x == g[i].back().second) {
                g[i].pop_back();
            } else {
                g[i].back().second -= x;
            }
        }
    }

    cout << ans.size() << "\n";
    for (auto& v : ans) {
        for (auto& t : v) {
            cout << t << " ";
        }

        cout << "\n";
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 47224 KB n=4
2 Correct 44 ms 47336 KB n=3
3 Correct 42 ms 47376 KB n=3
4 Correct 48 ms 47488 KB n=4
5 Correct 42 ms 47616 KB n=4
6 Correct 42 ms 47736 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 47224 KB n=4
2 Correct 44 ms 47336 KB n=3
3 Correct 42 ms 47376 KB n=3
4 Correct 48 ms 47488 KB n=4
5 Correct 42 ms 47616 KB n=4
6 Correct 42 ms 47736 KB n=2
7 Correct 42 ms 47736 KB n=5
8 Correct 43 ms 47736 KB n=8
9 Correct 46 ms 47736 KB n=14
10 Correct 51 ms 47736 KB n=11
11 Correct 65 ms 51940 KB n=50000
12 Correct 63 ms 51940 KB n=50000
13 Correct 42 ms 51940 KB n=10
14 Correct 43 ms 51940 KB n=685
15 Correct 54 ms 51940 KB n=623
16 Correct 46 ms 51940 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 47224 KB n=4
2 Correct 44 ms 47336 KB n=3
3 Correct 42 ms 47376 KB n=3
4 Correct 48 ms 47488 KB n=4
5 Correct 42 ms 47616 KB n=4
6 Correct 42 ms 47736 KB n=2
7 Correct 42 ms 47736 KB n=5
8 Correct 43 ms 47736 KB n=8
9 Correct 46 ms 47736 KB n=14
10 Correct 51 ms 47736 KB n=11
11 Correct 65 ms 51940 KB n=50000
12 Correct 63 ms 51940 KB n=50000
13 Correct 42 ms 51940 KB n=10
14 Correct 43 ms 51940 KB n=685
15 Correct 54 ms 51940 KB n=623
16 Correct 46 ms 51940 KB n=973
17 Correct 43 ms 51940 KB n=989
18 Correct 43 ms 51940 KB n=563
19 Correct 46 ms 51940 KB n=592
20 Correct 45 ms 51940 KB n=938
21 Correct 45 ms 51940 KB n=747
22 Correct 53 ms 51940 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 570 ms 126824 KB n=1000000
2 Correct 388 ms 126824 KB n=666666
3 Correct 249 ms 126824 KB n=400000
4 Correct 544 ms 133136 KB n=285714
5 Correct 60 ms 133136 KB n=20000
6 Correct 430 ms 133136 KB n=181818
7 Correct 58 ms 133136 KB n=10000
8 Correct 104 ms 133136 KB n=6666
9 Correct 44 ms 133136 KB n=4000
10 Correct 241 ms 133136 KB n=2857
11 Correct 43 ms 133136 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 47224 KB n=4
2 Correct 44 ms 47336 KB n=3
3 Correct 42 ms 47376 KB n=3
4 Correct 48 ms 47488 KB n=4
5 Correct 42 ms 47616 KB n=4
6 Correct 42 ms 47736 KB n=2
7 Correct 42 ms 47736 KB n=5
8 Correct 43 ms 47736 KB n=8
9 Correct 46 ms 47736 KB n=14
10 Correct 51 ms 47736 KB n=11
11 Correct 65 ms 51940 KB n=50000
12 Correct 63 ms 51940 KB n=50000
13 Correct 42 ms 51940 KB n=10
14 Correct 43 ms 51940 KB n=685
15 Correct 54 ms 51940 KB n=623
16 Correct 46 ms 51940 KB n=973
17 Correct 43 ms 51940 KB n=989
18 Correct 43 ms 51940 KB n=563
19 Correct 46 ms 51940 KB n=592
20 Correct 45 ms 51940 KB n=938
21 Correct 45 ms 51940 KB n=747
22 Correct 53 ms 51940 KB n=991
23 Correct 570 ms 126824 KB n=1000000
24 Correct 388 ms 126824 KB n=666666
25 Correct 249 ms 126824 KB n=400000
26 Correct 544 ms 133136 KB n=285714
27 Correct 60 ms 133136 KB n=20000
28 Correct 430 ms 133136 KB n=181818
29 Correct 58 ms 133136 KB n=10000
30 Correct 104 ms 133136 KB n=6666
31 Correct 44 ms 133136 KB n=4000
32 Correct 241 ms 133136 KB n=2857
33 Correct 43 ms 133136 KB n=2000
34 Correct 65 ms 133136 KB n=23514
35 Correct 68 ms 133136 KB n=23514
36 Correct 44 ms 133136 KB n=940
37 Correct 41 ms 133136 KB n=2
38 Correct 120 ms 133136 KB n=100000
39 Correct 139 ms 133136 KB n=100000
40 Correct 49 ms 133136 KB n=10
41 Correct 49 ms 133136 KB n=100
42 Correct 49 ms 133136 KB n=1000
43 Correct 717 ms 190988 KB n=1000000
44 Correct 748 ms 208224 KB n=1000000
45 Correct 609 ms 208224 KB n=666666
46 Correct 453 ms 208224 KB n=400000
47 Correct 235 ms 208224 KB n=2336
48 Correct 409 ms 208224 KB n=285714
49 Correct 390 ms 208224 KB n=181818
50 Correct 274 ms 208224 KB n=40000
51 Correct 238 ms 208224 KB n=20000
52 Correct 226 ms 208224 KB n=10000
53 Correct 231 ms 208224 KB n=6666
54 Correct 267 ms 208224 KB n=4000
55 Correct 275 ms 208224 KB n=2857
56 Correct 254 ms 208224 KB n=2000