oj.uz

Submission #333024

# Submission time Handle Problem Language Result Execution time Memory
333024 2020-12-04T09:17:02 Z guka415 Lasers (NOI19_lasers) C++14
100 / 100
 319 ms 10004 KB 
#define fast ios::sync_with_stdio(false); cin.tie(0)
#define foru(i, k, n) for (int i = k; i < n; i++)
#define ford(i, k, n) for (int i = k; i >= n; i--)
#define pb push_back
#define mp make_pair

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <bitset>

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int sz = 5e5+5;
ll l, n;
vector<pair<int, bool>> segs;

inline bool intersect(const pii& lhs, const pii& rhs) {
	return (rhs.first - lhs.second <= 1);
}


int main() {
	fast;
	cin >> l >> n;
	bool bad = 0;
	while (n--) {
		vector<int> v;
		int x, tmp, rsum = 0, lsum = 0;
		cin >> x;
		foru(i, 0, x) {
			cin >> tmp;
			rsum += tmp;
			v.pb(tmp);
		}
		if (rsum == l) {
			bad = 1;
			continue;
		}
		vector<pii> yes;
		yes.pb({ 0,l - rsum - 1 });
		lsum += v[0];
		rsum -= v[0];
		foru(i, 1, x + 1) {
			pii inval = { lsum, l - rsum - 1 }, yb = yes.back();
			if (intersect(yb, inval)) {
				yes.back() = { yb.first,inval.second };
			}
			else {
				yes.pb(inval);
			}
			if (i != x) {
				lsum += v[i];
				rsum -= v[i];
			}
		}
		foru(i, 0, yes.size() - 1) {
			segs.pb({ yes[i].second + 1,0 });
			segs.pb({ yes[i + 1].first - 1,1 });
		}
	}
	if (bad) {
		cout << l << '\n';
		return 0;
	}
	sort(segs.begin(), segs.end());
	ll tot = 0, prvLit = -1;
	int o = 0;
	for (auto x : segs) {
		if (!x.second) {
			if (o == 0) {
				prvLit = x.first;
			}
			o++;
		}
		else {
			o--;
			if (o == 0) {
				tot += (x.first - prvLit + 1);
			}
		}
	}
	cout << tot << '\n';
	return 0;
}

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:2:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    2 | #define foru(i, k, n) for (int i = k; i < n; i++)
......
   62 |   foru(i, 0, yes.size() - 1) {
      |        ~~~~~~~~~~~~~~~~~~~~              
lasers.cpp:62:3: note: in expansion of macro 'foru'
   62 |   foru(i, 0, yes.size() - 1) {
      |   ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 95 ms 6152 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 200 ms 9564 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 6732 KB Output is correct
2 Correct 7 ms 1392 KB Output is correct
3 Correct 45 ms 1480 KB Output is correct
4 Correct 77 ms 7088 KB Output is correct
5 Correct 31 ms 4752 KB Output is correct
6 Correct 44 ms 3644 KB Output is correct
7 Correct 35 ms 492 KB Output is correct
8 Correct 80 ms 5192 KB Output is correct
9 Correct 33 ms 6072 KB Output is correct
10 Correct 73 ms 8068 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 364 KB Output is correct
2 Correct 35 ms 364 KB Output is correct
3 Correct 32 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 35 ms 364 KB Output is correct
8 Correct 68 ms 364 KB Output is correct
9 Correct 53 ms 304 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 6732 KB Output is correct
2 Correct 7 ms 1392 KB Output is correct
3 Correct 45 ms 1480 KB Output is correct
4 Correct 77 ms 7088 KB Output is correct
5 Correct 31 ms 4752 KB Output is correct
6 Correct 44 ms 3644 KB Output is correct
7 Correct 35 ms 492 KB Output is correct
8 Correct 80 ms 5192 KB Output is correct
9 Correct 33 ms 6072 KB Output is correct
10 Correct 73 ms 8068 KB Output is correct
11 Correct 34 ms 364 KB Output is correct
12 Correct 35 ms 364 KB Output is correct
13 Correct 32 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 35 ms 364 KB Output is correct
18 Correct 68 ms 364 KB Output is correct
19 Correct 53 ms 304 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 319 ms 8668 KB Output is correct
22 Correct 17 ms 2148 KB Output is correct
23 Correct 19 ms 2144 KB Output is correct
24 Correct 67 ms 6804 KB Output is correct
25 Correct 245 ms 8796 KB Output is correct
26 Correct 54 ms 5848 KB Output is correct
27 Correct 24 ms 2024 KB Output is correct
28 Correct 178 ms 8668 KB Output is correct
29 Correct 244 ms 8668 KB Output is correct
30 Correct 50 ms 4208 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 95 ms 6152 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 200 ms 9564 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 62 ms 6732 KB Output is correct
22 Correct 7 ms 1392 KB Output is correct
23 Correct 45 ms 1480 KB Output is correct
24 Correct 77 ms 7088 KB Output is correct
25 Correct 31 ms 4752 KB Output is correct
26 Correct 44 ms 3644 KB Output is correct
27 Correct 35 ms 492 KB Output is correct
28 Correct 80 ms 5192 KB Output is correct
29 Correct 33 ms 6072 KB Output is correct
30 Correct 73 ms 8068 KB Output is correct
31 Correct 34 ms 364 KB Output is correct
32 Correct 35 ms 364 KB Output is correct
33 Correct 32 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 492 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 35 ms 364 KB Output is correct
38 Correct 68 ms 364 KB Output is correct
39 Correct 53 ms 304 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 319 ms 8668 KB Output is correct
42 Correct 17 ms 2148 KB Output is correct
43 Correct 19 ms 2144 KB Output is correct
44 Correct 67 ms 6804 KB Output is correct
45 Correct 245 ms 8796 KB Output is correct
46 Correct 54 ms 5848 KB Output is correct
47 Correct 24 ms 2024 KB Output is correct
48 Correct 178 ms 8668 KB Output is correct
49 Correct 244 ms 8668 KB Output is correct
50 Correct 50 ms 4208 KB Output is correct
51 Correct 56 ms 2364 KB Output is correct
52 Correct 167 ms 9948 KB Output is correct
53 Correct 262 ms 9704 KB Output is correct
54 Correct 176 ms 4064 KB Output is correct
55 Correct 161 ms 7004 KB Output is correct
56 Correct 128 ms 6568 KB Output is correct
57 Correct 67 ms 6748 KB Output is correct
58 Correct 184 ms 10004 KB Output is correct
59 Correct 46 ms 3640 KB Output is correct
60 Correct 64 ms 4692 KB Output is correct