oj.uz

Submission #243887

# Submission time Handle Problem Language Result Execution time Memory
243887 2020-07-02T04:40:33 Z _7_7_ Gift (IZhO18_nicegift) C++14
100 / 100
 1522 ms 196232 KB 
#include <bits/stdc++.h>                                           
 
#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define fastio ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
using namespace std;
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;
typedef unsigned long long ull;         
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;  
typedef long long ll;  
typedef double db;                             
 
 
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 555;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const int inf = 1e9, maxn = 4e5 + 148, mod = 1e9 + 7, N = 1e6 + 11;
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;


vector < pair < int, vi > > ans;
int n, m, k, a[N], sum;
set < int > pos, q;
vpii add, del;
vi Pos;


void f (int l, int r, int x) {
//	cerr << l << ' ' << r << ' ' << x << endl;
	pos.insert(l);
	pos.insert(r + 1);
	add.pb({l, x});
	del.pb({r + 1, x});
}

main () {
	fastio
	scanf("%lld%lld", &n, &k);
	for (int i = 1; i <= n; ++i) {
		scanf("%lld", &a[i]);
		sum += a[i];
	}

	m = sum / k;
	if ((sum % k) || m < *max_element(a + 1, a + 1 + n)) {
		cout << -1;
		return 0;
	}

	int cur = 1;
	for (int i = 1; i <= n; ++i) {
		if (cur + a[i] - 1 > m) {
			f(cur, m, i);
			f(1, cur + a[i] - 1 - m, i);
		} else
			f(cur, cur + a[i] - 1, i);

		cur += a[i];
		if (cur > m)
			cur -= m;
	}

	sort(all(add));
	sort(all(del));


	int j1 = 0, j2 = 0;
	for (auto i : pos)
		Pos.pb(i);


	for (int j = 0; j < sz(Pos); ++j) {
		int i = Pos[j];
		while (j2 < sz(del) && del[j2].f == i) {
			 q.erase(del[j2].s);
			 ++j2;
		}

		while (j1 < sz(add) && add[j1].f == i) {
			q.insert(add[j1].s);
			++j1;
		}

		if (j < sz(Pos) - 1) {
			vi tmp;
			for (auto x : q)
				tmp.pb(x);
			ans.pb({Pos[j + 1] - Pos[j], tmp});
//			cerr << Pos[j + 1] << ' ' << Pos[j] << endl;	
		}
	}

	printf("%lld\n", sz(ans));
	for (auto v : ans) {
		printf("%lld ", v.f);
		for (auto x : v.s)
			printf("%lld ", x);
		printf("\n");
	}
}

Compilation message

nicegift.cpp:55:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^
nicegift.cpp: In function 'int main()':
nicegift.cpp:57:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
nicegift.cpp:59:8: 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 5 ms 384 KB n=4
2 Correct 5 ms 428 KB n=3
3 Correct 5 ms 384 KB n=3
4 Correct 5 ms 384 KB n=4
5 Correct 5 ms 384 KB n=4
6 Correct 4 ms 384 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB n=4
2 Correct 5 ms 428 KB n=3
3 Correct 5 ms 384 KB n=3
4 Correct 5 ms 384 KB n=4
5 Correct 5 ms 384 KB n=4
6 Correct 4 ms 384 KB n=2
7 Correct 4 ms 384 KB n=5
8 Correct 5 ms 384 KB n=8
9 Correct 4 ms 384 KB n=14
10 Correct 5 ms 384 KB n=11
11 Correct 58 ms 8168 KB n=50000
12 Correct 54 ms 7912 KB n=50000
13 Correct 5 ms 384 KB n=10
14 Correct 6 ms 512 KB n=685
15 Correct 5 ms 512 KB n=623
16 Correct 6 ms 512 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB n=4
2 Correct 5 ms 428 KB n=3
3 Correct 5 ms 384 KB n=3
4 Correct 5 ms 384 KB n=4
5 Correct 5 ms 384 KB n=4
6 Correct 4 ms 384 KB n=2
7 Correct 4 ms 384 KB n=5
8 Correct 5 ms 384 KB n=8
9 Correct 4 ms 384 KB n=14
10 Correct 5 ms 384 KB n=11
11 Correct 58 ms 8168 KB n=50000
12 Correct 54 ms 7912 KB n=50000
13 Correct 5 ms 384 KB n=10
14 Correct 6 ms 512 KB n=685
15 Correct 5 ms 512 KB n=623
16 Correct 6 ms 512 KB n=973
17 Correct 6 ms 512 KB n=989
18 Correct 6 ms 512 KB n=563
19 Correct 7 ms 588 KB n=592
20 Correct 7 ms 640 KB n=938
21 Correct 7 ms 640 KB n=747
22 Correct 7 ms 640 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1130 ms 129272 KB n=1000000
2 Correct 588 ms 71932 KB n=666666
3 Correct 333 ms 37540 KB n=400000
4 Correct 580 ms 75284 KB n=285714
5 Correct 18 ms 1788 KB n=20000
6 Correct 467 ms 58240 KB n=181818
7 Correct 11 ms 1148 KB n=10000
8 Correct 44 ms 5144 KB n=6666
9 Correct 7 ms 640 KB n=4000
10 Correct 225 ms 25848 KB n=2857
11 Correct 6 ms 512 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB n=4
2 Correct 5 ms 428 KB n=3
3 Correct 5 ms 384 KB n=3
4 Correct 5 ms 384 KB n=4
5 Correct 5 ms 384 KB n=4
6 Correct 4 ms 384 KB n=2
7 Correct 4 ms 384 KB n=5
8 Correct 5 ms 384 KB n=8
9 Correct 4 ms 384 KB n=14
10 Correct 5 ms 384 KB n=11
11 Correct 58 ms 8168 KB n=50000
12 Correct 54 ms 7912 KB n=50000
13 Correct 5 ms 384 KB n=10
14 Correct 6 ms 512 KB n=685
15 Correct 5 ms 512 KB n=623
16 Correct 6 ms 512 KB n=973
17 Correct 6 ms 512 KB n=989
18 Correct 6 ms 512 KB n=563
19 Correct 7 ms 588 KB n=592
20 Correct 7 ms 640 KB n=938
21 Correct 7 ms 640 KB n=747
22 Correct 7 ms 640 KB n=991
23 Correct 1130 ms 129272 KB n=1000000
24 Correct 588 ms 71932 KB n=666666
25 Correct 333 ms 37540 KB n=400000
26 Correct 580 ms 75284 KB n=285714
27 Correct 18 ms 1788 KB n=20000
28 Correct 467 ms 58240 KB n=181818
29 Correct 11 ms 1148 KB n=10000
30 Correct 44 ms 5144 KB n=6666
31 Correct 7 ms 640 KB n=4000
32 Correct 225 ms 25848 KB n=2857
33 Correct 6 ms 512 KB n=2000
34 Correct 33 ms 4612 KB n=23514
35 Correct 34 ms 4580 KB n=23514
36 Correct 6 ms 512 KB n=940
37 Correct 5 ms 384 KB n=2
38 Correct 165 ms 21048 KB n=100000
39 Correct 165 ms 21064 KB n=100000
40 Correct 5 ms 384 KB n=10
41 Correct 5 ms 384 KB n=100
42 Correct 11 ms 1152 KB n=1000
43 Correct 1320 ms 185532 KB n=1000000
44 Correct 1522 ms 196232 KB n=1000000
45 Correct 989 ms 135508 KB n=666666
46 Correct 703 ms 92824 KB n=400000
47 Correct 229 ms 25592 KB n=2336
48 Correct 623 ms 75424 KB n=285714
49 Correct 480 ms 58168 KB n=181818
50 Correct 293 ms 34012 KB n=40000
51 Correct 252 ms 30216 KB n=20000
52 Correct 236 ms 27500 KB n=10000
53 Correct 232 ms 26804 KB n=6666
54 Correct 225 ms 26064 KB n=4000
55 Correct 224 ms 25828 KB n=2857
56 Correct 258 ms 24956 KB n=2000