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Submission #249050

# Submission time Handle Problem Language Result Execution time Memory
249050 2020-07-14T08:53:03 Z crossing0ver Strange Device (APIO19_strange_device) C++17
100 / 100
 633 ms 23960 KB 
#include<bits/stdc++.h>
#define tm (tl + tr)/2
#define inf 1100000000000000000
#define ll long long
using namespace std;

struct tre{
	bool lazy;
	ll sum;
	ll L,R;
	tre() {
		lazy = sum = L = R = 0;
	}
};
vector<tre>t(1);

void push(ll v,ll tl,ll tr,ll L,ll R) {
	if (t[v].lazy) {
		t[L].lazy = t[R].lazy = 1;
		t[L].sum = tm - tl+1;
		t[R].sum = tr - tm;
		t[v].lazy = 0;
	}
}

void upd(ll v,ll tl,ll tr,ll l,ll r) {
	if (l > tr || r < tl || t[v].lazy) return;
	if (l <= tl && r >= tr) {
		t[v].lazy = 1;
		t[v].sum = tr - tl + 1;
		return;
	}
	if (t[v].L == 0) {
		t[v].L = t.size();
		t.push_back(tre());
	}
	if (t[v].R == 0) {
		t[v].R = t.size();
		t.push_back(tre());
	}
	push(v,tl,tr,t[v].L,t[v].R);
	upd(t[v].L,tl,tm,l,r);
	upd(t[v].R,tm+1,tr,l,r);
	t[v].sum = t[ t[v].L ].sum + t[ t[v].R ].sum;
}


main() {
	ios::sync_with_stdio(false);
	ll n,a,b;
	cin >> n >> a >> b;
	ll m = a/(__gcd(a,b+1));
	if (m > inf/b) m = inf;
	
	else m*=b;
	vector<pair<ll,ll> > v;
		for (ll l,r;n--;) {
		cin >> l >> r;
		if (r - l + 1 >= m) {
			cout << m <<'\n';
			exit(0);
		}
		l%=m;
		r%=m;
		if (l < 0) l+=m;
		if (r < 0) r+=m;
		if ( l <= r) {
			v.push_back({l,r});
		//	upd(0,0,m-1,l,r);
		}
		else {
			v.push_back({0,r});
			v.push_back({l,m-1});
		//	upd(0,0,m-1,l,m-1);
		//	upd(0,0,m-1,0,r);
		}
	}
	sort(v.begin(),v.end());
	ll st = 0, en = -1,ans = 0;
	for (auto i : v) {
		ll x = i.first, y =i.second;
		if (y <= en) continue;
		if (x > en) {
			ans += y - x + 1;
			st = x; 
			en = y;
		}
		else {
			ans += y - en;
			st = x;
			en = y;
		}
	}
	
	cout << ans;
	
}

Compilation message

strange_device.cpp: In constructor 'tre::tre()':
strange_device.cpp:12:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   lazy = sum = L = R = 0;
          ~~~~^~~~~~~~~~~
strange_device.cpp: At global scope:
strange_device.cpp:48:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
strange_device.cpp: In function 'int main()':
strange_device.cpp:79:5: warning: variable 'st' set but not used [-Wunused-but-set-variable]
  ll st = 0, en = -1,ans = 0;
     ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 5 ms 768 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 55 ms 2544 KB Output is correct
18 Correct 0 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 372 ms 16952 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 521 ms 16876 KB Output is correct
3 Correct 512 ms 22228 KB Output is correct
4 Correct 512 ms 23948 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 521 ms 16876 KB Output is correct
3 Correct 512 ms 22228 KB Output is correct
4 Correct 512 ms 23948 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 502 ms 23892 KB Output is correct
7 Correct 523 ms 23960 KB Output is correct
8 Correct 576 ms 23908 KB Output is correct
9 Correct 633 ms 23868 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 521 ms 16876 KB Output is correct
3 Correct 512 ms 22228 KB Output is correct
4 Correct 512 ms 23948 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 57 ms 5736 KB Output is correct
7 Correct 80 ms 5740 KB Output is correct
8 Correct 55 ms 5740 KB Output is correct
9 Correct 65 ms 5748 KB Output is correct
10 Correct 54 ms 5740 KB Output is correct
11 Correct 62 ms 5740 KB Output is correct
12 Correct 56 ms 5736 KB Output is correct
13 Correct 64 ms 5736 KB Output is correct
14 Correct 59 ms 5760 KB Output is correct
15 Correct 67 ms 5780 KB Output is correct
16 Correct 59 ms 5760 KB Output is correct
17 Correct 54 ms 5740 KB Output is correct
18 Correct 515 ms 23764 KB Output is correct
19 Correct 508 ms 23796 KB Output is correct
20 Correct 570 ms 23796 KB Output is correct
21 Correct 71 ms 5776 KB Output is correct
22 Correct 51 ms 5744 KB Output is correct
23 Correct 186 ms 18656 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 56 ms 2544 KB Output is correct
3 Correct 53 ms 2544 KB Output is correct
4 Correct 574 ms 23764 KB Output is correct
5 Correct 54 ms 5740 KB Output is correct
6 Correct 59 ms 5740 KB Output is correct
7 Correct 55 ms 5736 KB Output is correct
8 Correct 56 ms 5740 KB Output is correct
9 Correct 65 ms 5884 KB Output is correct
10 Correct 54 ms 5736 KB Output is correct
11 Correct 54 ms 5740 KB Output is correct
12 Correct 50 ms 5740 KB Output is correct
13 Correct 55 ms 5740 KB Output is correct
14 Correct 575 ms 23768 KB Output is correct
15 Correct 58 ms 5736 KB Output is correct
16 Correct 519 ms 23640 KB Output is correct
17 Correct 501 ms 23636 KB Output is correct
18 Correct 1 ms 384 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 5 ms 768 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 55 ms 2544 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 0 ms 384 KB Output is correct
22 Correct 0 ms 384 KB Output is correct
23 Correct 0 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 372 ms 16952 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 521 ms 16876 KB Output is correct
31 Correct 512 ms 22228 KB Output is correct
32 Correct 512 ms 23948 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 502 ms 23892 KB Output is correct
35 Correct 523 ms 23960 KB Output is correct
36 Correct 576 ms 23908 KB Output is correct
37 Correct 633 ms 23868 KB Output is correct
38 Correct 0 ms 384 KB Output is correct
39 Correct 57 ms 5736 KB Output is correct
40 Correct 80 ms 5740 KB Output is correct
41 Correct 55 ms 5740 KB Output is correct
42 Correct 65 ms 5748 KB Output is correct
43 Correct 54 ms 5740 KB Output is correct
44 Correct 62 ms 5740 KB Output is correct
45 Correct 56 ms 5736 KB Output is correct
46 Correct 64 ms 5736 KB Output is correct
47 Correct 59 ms 5760 KB Output is correct
48 Correct 67 ms 5780 KB Output is correct
49 Correct 59 ms 5760 KB Output is correct
50 Correct 54 ms 5740 KB Output is correct
51 Correct 515 ms 23764 KB Output is correct
52 Correct 508 ms 23796 KB Output is correct
53 Correct 570 ms 23796 KB Output is correct
54 Correct 71 ms 5776 KB Output is correct
55 Correct 51 ms 5744 KB Output is correct
56 Correct 186 ms 18656 KB Output is correct
57 Correct 1 ms 384 KB Output is correct
58 Correct 56 ms 2544 KB Output is correct
59 Correct 53 ms 2544 KB Output is correct
60 Correct 574 ms 23764 KB Output is correct
61 Correct 54 ms 5740 KB Output is correct
62 Correct 59 ms 5740 KB Output is correct
63 Correct 55 ms 5736 KB Output is correct
64 Correct 56 ms 5740 KB Output is correct
65 Correct 65 ms 5884 KB Output is correct
66 Correct 54 ms 5736 KB Output is correct
67 Correct 54 ms 5740 KB Output is correct
68 Correct 50 ms 5740 KB Output is correct
69 Correct 55 ms 5740 KB Output is correct
70 Correct 575 ms 23768 KB Output is correct
71 Correct 58 ms 5736 KB Output is correct
72 Correct 519 ms 23640 KB Output is correct
73 Correct 501 ms 23636 KB Output is correct
74 Correct 1 ms 384 KB Output is correct
75 Correct 0 ms 384 KB Output is correct
76 Correct 1 ms 384 KB Output is correct
77 Correct 0 ms 384 KB Output is correct
78 Correct 0 ms 384 KB Output is correct
79 Correct 5 ms 1152 KB Output is correct
80 Correct 598 ms 23636 KB Output is correct
81 Correct 584 ms 23716 KB Output is correct
82 Correct 567 ms 23796 KB Output is correct
83 Correct 548 ms 23660 KB Output is correct
84 Correct 567 ms 23532 KB Output is correct
85 Correct 555 ms 23660 KB Output is correct
86 Correct 165 ms 18484 KB Output is correct
87 Correct 0 ms 384 KB Output is correct