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Submission #168942

# Submission time Handle Problem Language Result Execution time Memory
168942 2019-12-17T09:06:12 Z abil Gift (IZhO18_nicegift) C++14
100 / 100
 810 ms 149160 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
#define int long long

using namespace std;

const int N = (1e6 + 12);
const int mod = (1e9 + 7);
const int INF = (1e18 + 12);

int a[N], b[N];
vector<pair<int,int > > vec[N];
vector<int > ans[N];
int res[N];

main()
{
	int n, k, sum = 0, mx = 0;
	scanf("%lld%lld", &n, &k);
	for(int i = 1;i <= n; i++){
		scanf("%lld", &a[i]);
		sum += a[i];
		mx = max(mx, a[i]);
	}
	if(sum % k != 0 || mx > sum / k){
		cout << -1;
		return 0;
	}
	int cur_sum = 0;
	int sz = 0;
	for(int i = 1;i <= n; i++){
		cur_sum += a[i];
		if(cur_sum >= sum / k){
			int rem = cur_sum - sum / k;
			cur_sum = rem;
			vec[sz].pb({a[i] - rem, i});
			sz++;
			if(rem > 0){
				vec[sz].pb({rem, i});
			}
		}
		else{
			vec[sz].pb({a[i], i});
		}
	}
	int szofans = 1;
	while(1){
		int mn = INF;
		for(int i = 0;i < sz; i++){
			mn = min(mn, vec[i][b[i]].fr);
		}
		res[szofans] = mn;
		bool f = false;
		for(int i = 0;i < sz; i++){
			vec[i][b[i]].fr -= mn;
			ans[szofans].pb(vec[i][b[i]].sc);
			if(vec[i][b[i]].fr == 0){
				b[i]++;
				if(b[i] == vec[i].size()){
					f = true;
				}
			}
		}
		if(f){
			break;
		}
		szofans++;
	}
	cout << szofans << endl;
	for(int i = 1;i <= szofans; i++){
		printf("%lld ", res[i]);
		for(auto to : ans[i]){
			printf("%lld ", to);
		}
		printf("\n");
	}
}

Compilation message

nicegift.cpp:21:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
nicegift.cpp: In function 'int main()':
nicegift.cpp:64:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(b[i] == vec[i].size()){
        ~~~~~^~~~~~~~~~~~~~~~
nicegift.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
nicegift.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &a[i]);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 47352 KB n=4
2 Correct 45 ms 47224 KB n=3
3 Correct 44 ms 47224 KB n=3
4 Correct 45 ms 47340 KB n=4
5 Correct 45 ms 47224 KB n=4
6 Correct 55 ms 47352 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 47352 KB n=4
2 Correct 45 ms 47224 KB n=3
3 Correct 44 ms 47224 KB n=3
4 Correct 45 ms 47340 KB n=4
5 Correct 45 ms 47224 KB n=4
6 Correct 55 ms 47352 KB n=2
7 Correct 52 ms 47324 KB n=5
8 Correct 45 ms 47352 KB n=8
9 Correct 45 ms 47336 KB n=14
10 Correct 45 ms 47316 KB n=11
11 Correct 71 ms 50796 KB n=50000
12 Correct 71 ms 50672 KB n=50000
13 Correct 45 ms 47352 KB n=10
14 Correct 46 ms 47480 KB n=685
15 Correct 45 ms 47480 KB n=623
16 Correct 45 ms 47352 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 47352 KB n=4
2 Correct 45 ms 47224 KB n=3
3 Correct 44 ms 47224 KB n=3
4 Correct 45 ms 47340 KB n=4
5 Correct 45 ms 47224 KB n=4
6 Correct 55 ms 47352 KB n=2
7 Correct 52 ms 47324 KB n=5
8 Correct 45 ms 47352 KB n=8
9 Correct 45 ms 47336 KB n=14
10 Correct 45 ms 47316 KB n=11
11 Correct 71 ms 50796 KB n=50000
12 Correct 71 ms 50672 KB n=50000
13 Correct 45 ms 47352 KB n=10
14 Correct 46 ms 47480 KB n=685
15 Correct 45 ms 47480 KB n=623
16 Correct 45 ms 47352 KB n=973
17 Correct 45 ms 47352 KB n=989
18 Correct 45 ms 47428 KB n=563
19 Correct 46 ms 47480 KB n=592
20 Correct 55 ms 47480 KB n=938
21 Correct 46 ms 47484 KB n=747
22 Correct 48 ms 47552 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 496 ms 104860 KB n=1000000
2 Correct 328 ms 83148 KB n=666666
3 Correct 203 ms 67540 KB n=400000
4 Correct 448 ms 96092 KB n=285714
5 Correct 52 ms 48220 KB n=20000
6 Correct 394 ms 94192 KB n=181818
7 Correct 49 ms 47736 KB n=10000
8 Correct 87 ms 53624 KB n=6666
9 Correct 47 ms 47480 KB n=4000
10 Correct 273 ms 79864 KB n=2857
11 Correct 46 ms 47352 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 47352 KB n=4
2 Correct 45 ms 47224 KB n=3
3 Correct 44 ms 47224 KB n=3
4 Correct 45 ms 47340 KB n=4
5 Correct 45 ms 47224 KB n=4
6 Correct 55 ms 47352 KB n=2
7 Correct 52 ms 47324 KB n=5
8 Correct 45 ms 47352 KB n=8
9 Correct 45 ms 47336 KB n=14
10 Correct 45 ms 47316 KB n=11
11 Correct 71 ms 50796 KB n=50000
12 Correct 71 ms 50672 KB n=50000
13 Correct 45 ms 47352 KB n=10
14 Correct 46 ms 47480 KB n=685
15 Correct 45 ms 47480 KB n=623
16 Correct 45 ms 47352 KB n=973
17 Correct 45 ms 47352 KB n=989
18 Correct 45 ms 47428 KB n=563
19 Correct 46 ms 47480 KB n=592
20 Correct 55 ms 47480 KB n=938
21 Correct 46 ms 47484 KB n=747
22 Correct 48 ms 47552 KB n=991
23 Correct 496 ms 104860 KB n=1000000
24 Correct 328 ms 83148 KB n=666666
25 Correct 203 ms 67540 KB n=400000
26 Correct 448 ms 96092 KB n=285714
27 Correct 52 ms 48220 KB n=20000
28 Correct 394 ms 94192 KB n=181818
29 Correct 49 ms 47736 KB n=10000
30 Correct 87 ms 53624 KB n=6666
31 Correct 47 ms 47480 KB n=4000
32 Correct 273 ms 79864 KB n=2857
33 Correct 46 ms 47352 KB n=2000
34 Correct 71 ms 49280 KB n=23514
35 Correct 61 ms 49268 KB n=23514
36 Correct 46 ms 47352 KB n=940
37 Correct 45 ms 47352 KB n=2
38 Correct 152 ms 61420 KB n=100000
39 Correct 152 ms 61552 KB n=100000
40 Correct 46 ms 47352 KB n=10
41 Correct 46 ms 47352 KB n=100
42 Correct 52 ms 47992 KB n=1000
43 Correct 696 ms 131772 KB n=1000000
44 Correct 810 ms 149160 KB n=1000000
45 Correct 664 ms 130300 KB n=666666
46 Correct 538 ms 114516 KB n=400000
47 Correct 264 ms 75376 KB n=2336
48 Correct 456 ms 99944 KB n=285714
49 Correct 407 ms 96748 KB n=181818
50 Correct 299 ms 81784 KB n=40000
51 Correct 285 ms 79724 KB n=20000
52 Correct 286 ms 77816 KB n=10000
53 Correct 279 ms 84264 KB n=6666
54 Correct 261 ms 73080 KB n=4000
55 Correct 270 ms 79736 KB n=2857
56 Correct 253 ms 71928 KB n=2000