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Submission #206602

# Submission time Handle Problem Language Result Execution time Memory
206602 2020-03-04T07:46:06 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
35 / 100
 648 ms 40780 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
typedef int64_t 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);
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	llo n,a,b;
	cin>>n>>a>>b;
	llo x;
	pair<llo,llo> it;
	x=b;
	x*=(a/gcd(a,b+1));
/*	if((b+1)%a==0){
		x=b;
	}
	else{
		x=a*b;
	}*/


	llo aa,bb;
	llo s=0;
	vector<pair<llo,llo>> ac;
	for(llo i=0;i<n;i++){
		cin>>aa>>bb;
		if(bb-aa+1>=x){
			s=1;
			continue;
		}
		/*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;
		return 0;
	}
/*	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:81:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(llo i=0;i<prev.size();i++){
               ~^~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 888 KB Output is correct
3 Correct 10 ms 888 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 4 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 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 72 ms 4968 KB Output is correct
18 Incorrect 5 ms 376 KB Output isn't correct

Subtask #2
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 Incorrect 5 ms 376 KB Output isn't correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 380 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 414 ms 16852 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 629 ms 40648 KB Output is correct
3 Correct 584 ms 40640 KB Output is correct
4 Correct 550 ms 40640 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 629 ms 40648 KB Output is correct
3 Correct 584 ms 40640 KB Output is correct
4 Correct 550 ms 40640 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 559 ms 40712 KB Output is correct
7 Correct 563 ms 40636 KB Output is correct
8 Correct 546 ms 40644 KB Output is correct
9 Correct 600 ms 40780 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 629 ms 40648 KB Output is correct
3 Correct 584 ms 40640 KB Output is correct
4 Correct 550 ms 40640 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 59 ms 4968 KB Output is correct
7 Correct 68 ms 4972 KB Output is correct
8 Correct 63 ms 4968 KB Output is correct
9 Correct 61 ms 5152 KB Output is correct
10 Correct 59 ms 4972 KB Output is correct
11 Correct 60 ms 4968 KB Output is correct
12 Correct 57 ms 4968 KB Output is correct
13 Correct 62 ms 5092 KB Output is correct
14 Correct 60 ms 4968 KB Output is correct
15 Correct 63 ms 4968 KB Output is correct
16 Correct 59 ms 4968 KB Output is correct
17 Correct 66 ms 4968 KB Output is correct
18 Correct 546 ms 40620 KB Output is correct
19 Correct 547 ms 40640 KB Output is correct
20 Correct 632 ms 40640 KB Output is correct
21 Correct 62 ms 4968 KB Output is correct
22 Correct 57 ms 4968 KB Output is correct
23 Correct 175 ms 8672 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 62 ms 4968 KB Output is correct
3 Correct 64 ms 4972 KB Output is correct
4 Correct 648 ms 40736 KB Output is correct
5 Correct 65 ms 4972 KB Output is correct
6 Correct 61 ms 4932 KB Output is correct
7 Correct 90 ms 4968 KB Output is correct
8 Correct 61 ms 4968 KB Output is correct
9 Correct 58 ms 4968 KB Output is correct
10 Correct 61 ms 4972 KB Output is correct
11 Correct 60 ms 4976 KB Output is correct
12 Correct 57 ms 4968 KB Output is correct
13 Correct 71 ms 5248 KB Output is correct
14 Correct 603 ms 40764 KB Output is correct
15 Correct 59 ms 4968 KB Output is correct
16 Correct 554 ms 40616 KB Output is correct
17 Correct 550 ms 40700 KB Output is correct
18 Incorrect 5 ms 376 KB Output isn't correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 888 KB Output is correct
3 Correct 10 ms 888 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 4 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 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 72 ms 4968 KB Output is correct
18 Incorrect 5 ms 376 KB Output isn't correct