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Submission #206607

# Submission time Handle Problem Language Result Execution time Memory
206607 2020-03-04T07:57:55 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
100 / 100
 652 ms 63392 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
typedef long long llo;
#define ak first
#define  bk second
#define endl "\n"
llo gcd(llo kk,llo ll){
	if(ll==0){
		return kk;
	}
	return gcd(ll,kk%ll);
}
const llo inf = (llo)1e18 + 3;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	llo n,a,b;
	cin>>n>>a>>b;
	llo x;
	vector<pair<llo,llo>> it;
	x=b;
	llo y=a/gcd(a,b+1);
	/*if(y>1000000000000000000LL/b){

	}*/
	
/*	if((b+1)%a==0){
		x=b;
	}
	else{
		x=a*b;
	}*/


	llo aa,bb;
	llo ss=0;
	vector<pair<llo,llo>> ac;
	for(llo i=0;i<n;i++){
		cin>>aa>>bb;
		ss+=bb-aa+1;
		it.pb(mp(aa,bb));
	}
	if(y>(llo)2*(inf/b)){
		cout<<ss<<endl;
		return 0;
	}
	x*=(a/gcd(a,b+1));
	for(llo i=0;i<n;i++){
		aa=it[i].ak;
		bb=it[i].bk;
		if(bb-aa+1>=x){
			cout<<x<<endl;
			return 0;
		}
		/*if(bb-aa+1>=x){
			ac.pb(mp(0,x-1));
		}*/
		aa%=x;
		bb%=x;
		if(bb<aa){
			ac.pb(mp(aa,x-1));
			ac.pb(mp(0,bb));
		}
		else{
			ac.pb(mp(aa,bb));
		}

	}

/*	if(s==1){
		cout<<x<<endl;
	}
	else{*/
		vector<pair<llo,llo>> prev;
		sort(ac.begin(),ac.end());

		for(auto cc:ac){
			if(prev.size()==0){
				prev.pb(cc);
			}
			else{
				if(cc.ak>prev[prev.size()-1].bk){
					prev.pb(cc);
				}
				else{
					prev[prev.size()-1].bk=max(prev[prev.size()-1].bk,cc.bk);
				}
			}
		}
		llo tot=0;
		for(llo i=0;i<prev.size();i++){
			tot+=prev[i].bk-prev[i].ak+1;
		}
	/*	if(s==1 and tot<x){
			while(true){
				int y=1;
			}
		}
*/
		cout<<tot<<endl;
	//}













	return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:95:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(llo i=0;i<prev.size();i++){
               ~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 1012 KB Output is correct
3 Correct 11 ms 1012 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 4 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 4 ms 376 KB Output is correct
16 Correct 10 ms 1012 KB Output is correct
17 Correct 65 ms 6632 KB Output is correct
18 Correct 5 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 4 ms 376 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 419 ms 40616 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 561 ms 56264 KB Output is correct
3 Correct 557 ms 56228 KB Output is correct
4 Correct 551 ms 56392 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 561 ms 56264 KB Output is correct
3 Correct 557 ms 56228 KB Output is correct
4 Correct 551 ms 56392 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 567 ms 56360 KB Output is correct
7 Correct 563 ms 56480 KB Output is correct
8 Correct 571 ms 56224 KB Output is correct
9 Correct 605 ms 56484 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 561 ms 56264 KB Output is correct
3 Correct 557 ms 56228 KB Output is correct
4 Correct 551 ms 56392 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 58 ms 6500 KB Output is correct
7 Correct 62 ms 6500 KB Output is correct
8 Correct 62 ms 6504 KB Output is correct
9 Correct 59 ms 6628 KB Output is correct
10 Correct 59 ms 6504 KB Output is correct
11 Correct 60 ms 6500 KB Output is correct
12 Correct 59 ms 6496 KB Output is correct
13 Correct 61 ms 6504 KB Output is correct
14 Correct 60 ms 6500 KB Output is correct
15 Correct 64 ms 6568 KB Output is correct
16 Correct 63 ms 6628 KB Output is correct
17 Correct 59 ms 6500 KB Output is correct
18 Correct 556 ms 56476 KB Output is correct
19 Correct 565 ms 56480 KB Output is correct
20 Correct 628 ms 56448 KB Output is correct
21 Correct 62 ms 6628 KB Output is correct
22 Correct 57 ms 6500 KB Output is correct
23 Correct 177 ms 18000 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 63 ms 6528 KB Output is correct
3 Correct 62 ms 6496 KB Output is correct
4 Correct 632 ms 56420 KB Output is correct
5 Correct 62 ms 6628 KB Output is correct
6 Correct 64 ms 6592 KB Output is correct
7 Correct 62 ms 6500 KB Output is correct
8 Correct 64 ms 6500 KB Output is correct
9 Correct 62 ms 6500 KB Output is correct
10 Correct 63 ms 6504 KB Output is correct
11 Correct 62 ms 6500 KB Output is correct
12 Correct 58 ms 6500 KB Output is correct
13 Correct 64 ms 6500 KB Output is correct
14 Correct 612 ms 56452 KB Output is correct
15 Correct 65 ms 6628 KB Output is correct
16 Correct 544 ms 56356 KB Output is correct
17 Correct 558 ms 56360 KB Output is correct
18 Correct 5 ms 376 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 1012 KB Output is correct
3 Correct 11 ms 1012 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 4 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 4 ms 376 KB Output is correct
16 Correct 10 ms 1012 KB Output is correct
17 Correct 65 ms 6632 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 6 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 419 ms 40616 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 561 ms 56264 KB Output is correct
31 Correct 557 ms 56228 KB Output is correct
32 Correct 551 ms 56392 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 567 ms 56360 KB Output is correct
35 Correct 563 ms 56480 KB Output is correct
36 Correct 571 ms 56224 KB Output is correct
37 Correct 605 ms 56484 KB Output is correct
38 Correct 4 ms 376 KB Output is correct
39 Correct 58 ms 6500 KB Output is correct
40 Correct 62 ms 6500 KB Output is correct
41 Correct 62 ms 6504 KB Output is correct
42 Correct 59 ms 6628 KB Output is correct
43 Correct 59 ms 6504 KB Output is correct
44 Correct 60 ms 6500 KB Output is correct
45 Correct 59 ms 6496 KB Output is correct
46 Correct 61 ms 6504 KB Output is correct
47 Correct 60 ms 6500 KB Output is correct
48 Correct 64 ms 6568 KB Output is correct
49 Correct 63 ms 6628 KB Output is correct
50 Correct 59 ms 6500 KB Output is correct
51 Correct 556 ms 56476 KB Output is correct
52 Correct 565 ms 56480 KB Output is correct
53 Correct 628 ms 56448 KB Output is correct
54 Correct 62 ms 6628 KB Output is correct
55 Correct 57 ms 6500 KB Output is correct
56 Correct 177 ms 18000 KB Output is correct
57 Correct 5 ms 376 KB Output is correct
58 Correct 63 ms 6528 KB Output is correct
59 Correct 62 ms 6496 KB Output is correct
60 Correct 632 ms 56420 KB Output is correct
61 Correct 62 ms 6628 KB Output is correct
62 Correct 64 ms 6592 KB Output is correct
63 Correct 62 ms 6500 KB Output is correct
64 Correct 64 ms 6500 KB Output is correct
65 Correct 62 ms 6500 KB Output is correct
66 Correct 63 ms 6504 KB Output is correct
67 Correct 62 ms 6500 KB Output is correct
68 Correct 58 ms 6500 KB Output is correct
69 Correct 64 ms 6500 KB Output is correct
70 Correct 612 ms 56452 KB Output is correct
71 Correct 65 ms 6628 KB Output is correct
72 Correct 544 ms 56356 KB Output is correct
73 Correct 558 ms 56360 KB Output is correct
74 Correct 5 ms 376 KB Output is correct
75 Correct 5 ms 376 KB Output is correct
76 Correct 5 ms 376 KB Output is correct
77 Correct 5 ms 376 KB Output is correct
78 Correct 5 ms 376 KB Output is correct
79 Correct 11 ms 1372 KB Output is correct
80 Correct 640 ms 62932 KB Output is correct
81 Correct 652 ms 63004 KB Output is correct
82 Correct 622 ms 62940 KB Output is correct
83 Correct 624 ms 63024 KB Output is correct
84 Correct 621 ms 63048 KB Output is correct
85 Correct 633 ms 63392 KB Output is correct
86 Correct 187 ms 30548 KB Output is correct
87 Correct 5 ms 380 KB Output is correct