oj.uz

Submission #496326

# Submission time Handle Problem Language Result Execution time Memory
496326 2021-12-21T05:47:20 Z Ierus Gift (IZhO18_nicegift) C++17
100 / 100
 606 ms 133240 KB 
#include<bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
*/
using namespace std;
#pragma GCC optimize ("unroll-loops,Ofast,O3")
#pragma GCC target("avx,avx2,fma")
#define F first
#define S second
#define int long long
#define sz(x) (int)x.size()
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define NFS ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0) ;
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
//#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
typedef long long ll;
const int E = 1e6+777;
const long long inf = 1e18+777;
const int N = 1e5+777;
const int MOD = 1e9+7;
int n, k, a[E], sum;
vector<vector<int>> res;
priority_queue<pair<int,int>> pq;
signed main(){auto solve=[&](){
	cin >> n >> k;
	for(int i = 1; i <= n; ++i){
		cin >> a[i];
		sum += a[i];
		if(a[i] > 0){
			pq.push({a[i], i});
		}
	}
	bool ok = (sum % k == 0);
	for(int i = 1; i <= n; ++i){
		if(a[i] > sum / k) ok = false;
	}
	if(!ok){
		cout << -1;
		return;
	}
	int len = sum / k;
	vector<vector<pair<int,int>>> m(k);
	vector<int> sm(k, 0), u(k, 0);
	for(int i = 1, e = 0; i <= n;){
		if(sm[e] + a[i] <= len){
			m[e].pb({a[i], i});
			sm[e] += a[i];
			++i;
		}else{
			int cur = len - sm[e];
			if(!cur){
				++e;
				continue;
			}
			sm[e] += cur;
			m[e].pb({cur, i});
			a[i] -= cur;
			++e;
		}
		if(!a[i])++i;
	}
//	cerr << "M\n";
//	for(int i = 0; i < k; ++i){
//		for(int j = 0; j < sz(m[i]); ++j){
//			cerr << m[i][j].F << ' ';
//		}
//		cerr << '\n';
//	}cerr << '\n';
	auto check = [&](){
		bool ok = 0;
		for(int i = 0; i < k; ++i){
			if(sm[i])ok=1;
		}
		return ok;
	};
	while(check()){
//		cerr << "OK\n";
		vector<int> r;
		int mn = LLONG_MAX;
		for(int i = 0; i < k; ++i){
			mn = min(mn, m[i][u[i]].F);
		}
		r.pb(mn);
		for(int i = 0; i < k; ++i){
			sm[i] -= mn;
			m[i][u[i]].F -= mn;
			r.pb(m[i][u[i]].S);	
			if(m[i][u[i]].F == 0){
				++u[i];
			}
		}
		res.pb(r);
	}
	cout << sz(res) << '\n';
	for(auto v : res){
		for(auto it : v)
			cout << it << ' ';
		cout << '\n';
	}
};NFS;solve();}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB n=4
2 Correct 1 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 1 ms 320 KB n=4
5 Correct 1 ms 320 KB n=4
6 Correct 0 ms 204 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB n=4
2 Correct 1 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 1 ms 320 KB n=4
5 Correct 1 ms 320 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 1 ms 204 KB n=5
8 Correct 1 ms 204 KB n=8
9 Correct 16 ms 320 KB n=14
10 Correct 1 ms 204 KB n=11
11 Correct 35 ms 5308 KB n=50000
12 Correct 24 ms 5096 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 324 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 1 ms 316 KB n=4
2 Correct 1 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 1 ms 320 KB n=4
5 Correct 1 ms 320 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 1 ms 204 KB n=5
8 Correct 1 ms 204 KB n=8
9 Correct 16 ms 320 KB n=14
10 Correct 1 ms 204 KB n=11
11 Correct 35 ms 5308 KB n=50000
12 Correct 24 ms 5096 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 324 KB n=623
16 Correct 1 ms 332 KB n=973
17 Correct 1 ms 432 KB n=989
18 Correct 1 ms 332 KB n=563
19 Correct 2 ms 460 KB n=592
20 Correct 2 ms 440 KB n=938
21 Correct 2 ms 460 KB n=747
22 Correct 2 ms 440 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 463 ms 94712 KB n=1000000
2 Correct 250 ms 59084 KB n=666666
3 Correct 135 ms 32932 KB n=400000
4 Correct 310 ms 61824 KB n=285714
5 Correct 8 ms 1720 KB n=20000
6 Correct 278 ms 49520 KB n=181818
7 Correct 3 ms 976 KB n=10000
8 Correct 60 ms 4932 KB n=6666
9 Correct 2 ms 588 KB n=4000
10 Correct 166 ms 25552 KB n=2857
11 Correct 1 ms 460 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB n=4
2 Correct 1 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 1 ms 320 KB n=4
5 Correct 1 ms 320 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 1 ms 204 KB n=5
8 Correct 1 ms 204 KB n=8
9 Correct 16 ms 320 KB n=14
10 Correct 1 ms 204 KB n=11
11 Correct 35 ms 5308 KB n=50000
12 Correct 24 ms 5096 KB n=50000
13 Correct 0 ms 204 KB n=10
14 Correct 1 ms 332 KB n=685
15 Correct 1 ms 324 KB n=623
16 Correct 1 ms 332 KB n=973
17 Correct 1 ms 432 KB n=989
18 Correct 1 ms 332 KB n=563
19 Correct 2 ms 460 KB n=592
20 Correct 2 ms 440 KB n=938
21 Correct 2 ms 460 KB n=747
22 Correct 2 ms 440 KB n=991
23 Correct 463 ms 94712 KB n=1000000
24 Correct 250 ms 59084 KB n=666666
25 Correct 135 ms 32932 KB n=400000
26 Correct 310 ms 61824 KB n=285714
27 Correct 8 ms 1720 KB n=20000
28 Correct 278 ms 49520 KB n=181818
29 Correct 3 ms 976 KB n=10000
30 Correct 60 ms 4932 KB n=6666
31 Correct 2 ms 588 KB n=4000
32 Correct 166 ms 25552 KB n=2857
33 Correct 1 ms 460 KB n=2000
34 Correct 17 ms 3040 KB n=23514
35 Correct 14 ms 3076 KB n=23514
36 Correct 1 ms 320 KB n=940
37 Correct 0 ms 204 KB n=2
38 Correct 73 ms 16344 KB n=100000
39 Correct 75 ms 16428 KB n=100000
40 Correct 1 ms 204 KB n=10
41 Correct 1 ms 320 KB n=100
42 Correct 5 ms 972 KB n=1000
43 Correct 561 ms 122700 KB n=1000000
44 Correct 606 ms 133240 KB n=1000000
45 Correct 458 ms 103972 KB n=666666
46 Correct 343 ms 73748 KB n=400000
47 Correct 150 ms 25284 KB n=2336
48 Correct 303 ms 61772 KB n=285714
49 Correct 246 ms 49508 KB n=181818
50 Correct 169 ms 31552 KB n=40000
51 Correct 207 ms 28992 KB n=20000
52 Correct 178 ms 26748 KB n=10000
53 Correct 159 ms 26440 KB n=6666
54 Correct 155 ms 25776 KB n=4000
55 Correct 150 ms 25584 KB n=2857
56 Correct 152 ms 24540 KB n=2000