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Submission #511152

# Submission time Handle Problem Language Result Execution time Memory
511152 2022-01-15T09:23:45 Z Mazaalai Gift (IZhO18_nicegift) C++17
100 / 100
 1004 ms 81564 KB 
#include <bits/stdc++.h>
#define pb push_back
#define ff first
#define ss second
#define LLA(x) x.rbegin(),x.rend()
#define print(x) for(auto el:x)cout<<el<<' ';cout<<"\n";
#define printPII(x) for(auto [a,b]:x)cout<<a<<","<<b<<' ';cout<<'\n';
using namespace std;
using ll = long long;
using PII = pair <ll, int>;
int n, k, id;
bool impossible;
// set <PII> bfs;
priority_queue <PII> bfs;
vector <ll> ansW;
vector <vector <int> > ans;
signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	// freopen("in.txt", "r", stdin);
	// freopen("out.txt", "w", stdout);
	cin >> n >> k;
	ll sum = 0, val;
	for (int i = 1; i <= n; i++) {
		ll x; cin >> x;
		sum += x;
		bfs.push({x, i});
	}
	bfs.push({0, 0});
	ll packs = sum / k;
	if (sum % k != 0 || bfs.top().ff > packs) {
		cout << "-1\n";
		return 0;
	}
	while(packs > 0) {
		vector <PII> add;
		for (int i = 0; i < k; i++) {
			tie(val, id) = bfs.top();
			bfs.pop();
			add.pb({val, id});
		}
		ll pick = min(add.back().ff, packs-bfs.top().ff);
		packs -= pick;
		vector <int> cur;
		for (int i = 0; i < k; i++) {
			tie(val, id) = add.back();
			add.pop_back();
			val -= pick;
			cur.pb(id);
			bfs.push({val, id});
		}
		ansW.pb(pick);
		ans.pb(cur);
	}
	cout << ans.size() << '\n';
	for (int i = 0; i < ans.size(); i++){
		cout << ansW[i] << ' ';
		print(ans[i]);
	}
}

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:57:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |  for (int i = 0; i < ans.size(); i++){
      |                  ~~^~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 1 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 1 ms 292 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 1 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 1 ms 292 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 0 ms 204 KB n=8
9 Correct 0 ms 204 KB n=14
10 Correct 0 ms 204 KB n=11
11 Correct 23 ms 3612 KB n=50000
12 Correct 19 ms 3276 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 312 KB n=623
16 Correct 1 ms 332 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 1 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 1 ms 292 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 0 ms 204 KB n=8
9 Correct 0 ms 204 KB n=14
10 Correct 0 ms 204 KB n=11
11 Correct 23 ms 3612 KB n=50000
12 Correct 19 ms 3276 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 312 KB n=623
16 Correct 1 ms 332 KB n=973
17 Correct 1 ms 332 KB n=989
18 Correct 1 ms 332 KB n=563
19 Correct 1 ms 332 KB n=592
20 Correct 1 ms 332 KB n=938
21 Correct 1 ms 332 KB n=747
22 Correct 1 ms 332 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 563 ms 62536 KB n=1000000
2 Correct 317 ms 37200 KB n=666666
3 Correct 188 ms 17376 KB n=400000
4 Correct 119 ms 11476 KB n=285714
5 Correct 10 ms 1040 KB n=20000
6 Correct 74 ms 7012 KB n=181818
7 Correct 4 ms 844 KB n=10000
8 Correct 3 ms 588 KB n=6666
9 Correct 3 ms 460 KB n=4000
10 Correct 4 ms 588 KB n=2857
11 Correct 1 ms 332 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 1 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 1 ms 292 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 0 ms 204 KB n=8
9 Correct 0 ms 204 KB n=14
10 Correct 0 ms 204 KB n=11
11 Correct 23 ms 3612 KB n=50000
12 Correct 19 ms 3276 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 312 KB n=623
16 Correct 1 ms 332 KB n=973
17 Correct 1 ms 332 KB n=989
18 Correct 1 ms 332 KB n=563
19 Correct 1 ms 332 KB n=592
20 Correct 1 ms 332 KB n=938
21 Correct 1 ms 332 KB n=747
22 Correct 1 ms 332 KB n=991
23 Correct 563 ms 62536 KB n=1000000
24 Correct 317 ms 37200 KB n=666666
25 Correct 188 ms 17376 KB n=400000
26 Correct 119 ms 11476 KB n=285714
27 Correct 10 ms 1040 KB n=20000
28 Correct 74 ms 7012 KB n=181818
29 Correct 4 ms 844 KB n=10000
30 Correct 3 ms 588 KB n=6666
31 Correct 3 ms 460 KB n=4000
32 Correct 4 ms 588 KB n=2857
33 Correct 1 ms 332 KB n=2000
34 Correct 17 ms 2252 KB n=23514
35 Correct 21 ms 2356 KB n=23514
36 Correct 1 ms 332 KB n=940
37 Correct 0 ms 204 KB n=2
38 Correct 43 ms 4400 KB n=100000
39 Correct 43 ms 4380 KB n=100000
40 Correct 1 ms 204 KB n=10
41 Correct 1 ms 332 KB n=100
42 Correct 3 ms 460 KB n=1000
43 Correct 619 ms 78300 KB n=1000000
44 Correct 1004 ms 81564 KB n=1000000
45 Correct 688 ms 59212 KB n=666666
46 Correct 343 ms 31120 KB n=400000
47 Correct 10 ms 828 KB n=2336
48 Correct 590 ms 46752 KB n=285714
49 Correct 495 ms 36568 KB n=181818
50 Correct 30 ms 2312 KB n=40000
51 Correct 12 ms 1228 KB n=20000
52 Correct 8 ms 828 KB n=10000
53 Correct 46 ms 3152 KB n=6666
54 Correct 5 ms 500 KB n=4000
55 Correct 221 ms 11180 KB n=2857
56 Correct 4 ms 432 KB n=2000