oj.uz

Submission #502637

# Submission time Handle Problem Language Result Execution time Memory
502637 2022-01-06T11:15:53 Z lukameladze Gift (IZhO18_nicegift) C++14
49 / 100
 2000 ms 165544 KB 
#include <bits/stdc++.h>
#define f first
#define s second
#define int long long
#define pb push_back
#define pii pair <int, int>
using namespace std;
const int N = 3e6 + 5;
int n,k,a[N],mx,cur,sum,le,ri,mid,sum1,mx1,mn,anss,cnt;
vector < pii > v;
vector <int> ans[N];
vector < pii > v1;
int pas[N];
set <pii > :: iterator it;
set < pii > ms;
main() {
  	std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    cin>>n>>k;
    for (int i = 1; i <= n; i++) {
        cin>>a[i];
        mx = max(mx,a[i]);
        sum += a[i];
        ms.insert({a[i],i});
    }
    if (mx > sum / k || sum % k) {
        cout<<"-1"<<endl;
        return 0;
    }
    int ss = 0;
    sum1 = sum;
    while (true) {
        v.clear();v1.clear();
        mx = mx1 = 0;
        if (ms.size() == 0) break;
        mn = 1e18;
    	   it = ms.end();
    	   cnt = 0;
        while (true) {
            it--;
            cnt++;
            if (cnt <= k) {
                mx = max(mx,(*it).f);
                mn = min(mn,(*it).f);
            }
            if (cnt == k + 1) {
                mx1 = (*it).f;
                break;
            }
            if (it == ms.begin()) break;
        }
        // anss <= mn da 
        anss = mn;
        int ff = (sum1 - k * mx1)/k;
        if (mx1 >= mx - ff)
        anss = min(anss,ff);
        /*
        le = 1;
        ri = 1e18;
        while(le <= ri) {
            mid = (le + ri) / 2;
            if (mn < mid || max(mx1,mx-mid)>(sum1 - k*mid)/k) {
                ri = mid - 1;
            } else {
                anss = mid;
                le = mid + 1;
            }
        }*/
        cur++;
        pas[cur] = anss;
        for (int i = 0; i < k; i++) {
        	it = ms.end();
            it--;
            int x = (*it).f; int y = (*it).s;
            a[y] -= anss;sum1 -= anss;
            v1.pb({x - anss, y});
            ans[cur].pb(y);
			ms.erase(it);
        }
        for (int i = 0; i < v1.size(); i++) {
        	if (v1[i].f != 0)
            ms.insert({v1[i].f,v1[i].s});
        }
    }
    cout<<cur<<"\n";
    for (int i = 1; i <= cur; i++) {
        cout<<pas[i]<<" ";
        for (int j = 0; j < ans[i].size(); j++) {
            cout<<ans[i][j]<<" ";
        }cout<<"\n";
    }
}

Compilation message

nicegift.cpp:16:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   16 | main() {
      | ^~~~
nicegift.cpp: In function 'int main()':
nicegift.cpp:79:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |         for (int i = 0; i < v1.size(); i++) {
      |                         ~~^~~~~~~~~~~
nicegift.cpp:87:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |         for (int j = 0; j < ans[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~~
nicegift.cpp:29:9: warning: unused variable 'ss' [-Wunused-variable]
   29 |     int ss = 0;
      |         ^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 70644 KB n=4
2 Correct 42 ms 70716 KB n=3
3 Correct 38 ms 70732 KB n=3
4 Correct 37 ms 70732 KB n=4
5 Correct 37 ms 70696 KB n=4
6 Correct 36 ms 70712 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 70644 KB n=4
2 Correct 42 ms 70716 KB n=3
3 Correct 38 ms 70732 KB n=3
4 Correct 37 ms 70732 KB n=4
5 Correct 37 ms 70696 KB n=4
6 Correct 36 ms 70712 KB n=2
7 Correct 39 ms 70728 KB n=5
8 Correct 43 ms 70628 KB n=8
9 Correct 49 ms 70752 KB n=14
10 Correct 42 ms 70740 KB n=11
11 Correct 67 ms 74964 KB n=50000
12 Correct 70 ms 74812 KB n=50000
13 Correct 38 ms 70752 KB n=10
14 Correct 50 ms 70820 KB n=685
15 Correct 46 ms 70724 KB n=623
16 Correct 42 ms 70728 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 70644 KB n=4
2 Correct 42 ms 70716 KB n=3
3 Correct 38 ms 70732 KB n=3
4 Correct 37 ms 70732 KB n=4
5 Correct 37 ms 70696 KB n=4
6 Correct 36 ms 70712 KB n=2
7 Correct 39 ms 70728 KB n=5
8 Correct 43 ms 70628 KB n=8
9 Correct 49 ms 70752 KB n=14
10 Correct 42 ms 70740 KB n=11
11 Correct 67 ms 74964 KB n=50000
12 Correct 70 ms 74812 KB n=50000
13 Correct 38 ms 70752 KB n=10
14 Correct 50 ms 70820 KB n=685
15 Correct 46 ms 70724 KB n=623
16 Correct 42 ms 70728 KB n=973
17 Correct 38 ms 70836 KB n=989
18 Correct 38 ms 70736 KB n=563
19 Correct 39 ms 70764 KB n=592
20 Correct 44 ms 70812 KB n=938
21 Correct 38 ms 70836 KB n=747
22 Correct 40 ms 70848 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 652 ms 162004 KB n=1000000
2 Correct 417 ms 128644 KB n=666666
3 Correct 282 ms 104652 KB n=400000
4 Correct 188 ms 94864 KB n=285714
5 Correct 54 ms 72536 KB n=20000
6 Correct 133 ms 86140 KB n=181818
7 Correct 51 ms 71664 KB n=10000
8 Correct 56 ms 71344 KB n=6666
9 Correct 41 ms 71080 KB n=4000
10 Correct 41 ms 71140 KB n=2857
11 Correct 48 ms 70852 KB n=2000

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 70644 KB n=4
2 Correct 42 ms 70716 KB n=3
3 Correct 38 ms 70732 KB n=3
4 Correct 37 ms 70732 KB n=4
5 Correct 37 ms 70696 KB n=4
6 Correct 36 ms 70712 KB n=2
7 Correct 39 ms 70728 KB n=5
8 Correct 43 ms 70628 KB n=8
9 Correct 49 ms 70752 KB n=14
10 Correct 42 ms 70740 KB n=11
11 Correct 67 ms 74964 KB n=50000
12 Correct 70 ms 74812 KB n=50000
13 Correct 38 ms 70752 KB n=10
14 Correct 50 ms 70820 KB n=685
15 Correct 46 ms 70724 KB n=623
16 Correct 42 ms 70728 KB n=973
17 Correct 38 ms 70836 KB n=989
18 Correct 38 ms 70736 KB n=563
19 Correct 39 ms 70764 KB n=592
20 Correct 44 ms 70812 KB n=938
21 Correct 38 ms 70836 KB n=747
22 Correct 40 ms 70848 KB n=991
23 Correct 652 ms 162004 KB n=1000000
24 Correct 417 ms 128644 KB n=666666
25 Correct 282 ms 104652 KB n=400000
26 Correct 188 ms 94864 KB n=285714
27 Correct 54 ms 72536 KB n=20000
28 Correct 133 ms 86140 KB n=181818
29 Correct 51 ms 71664 KB n=10000
30 Correct 56 ms 71344 KB n=6666
31 Correct 41 ms 71080 KB n=4000
32 Correct 41 ms 71140 KB n=2857
33 Correct 48 ms 70852 KB n=2000
34 Correct 55 ms 72928 KB n=23514
35 Correct 53 ms 73044 KB n=23514
36 Correct 40 ms 70748 KB n=940
37 Correct 39 ms 70752 KB n=2
38 Correct 93 ms 79164 KB n=100000
39 Correct 88 ms 79216 KB n=100000
40 Correct 40 ms 70764 KB n=10
41 Correct 39 ms 70800 KB n=100
42 Correct 48 ms 70936 KB n=1000
43 Correct 815 ms 163400 KB n=1000000
44 Execution timed out 2107 ms 165544 KB Time limit exceeded
45 Halted 0 ms 0 KB -