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Submission #206586

# Submission time Handle Problem Language Result Execution time Memory
206586 2020-03-04T06:55:00 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
35 / 100
 864 ms 79824 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
typedef int64_t llo;
#define a first
#define  b 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;
	set<pair<llo,llo>> ac;
	for(llo i=0;i<n;i++){
		cin>>aa>>bb;
		if(bb-aa+1>=x){
			cout<<x<<endl;
			return 0;
		}
		aa%=x;
		bb%=x;
		if(bb<aa){
			ac.insert(mp(aa,x-1));
			ac.insert(mp(0,bb));
		}
		else{
			ac.insert(mp(aa,bb));
		}

	}
	vector<pair<llo,llo>> prev;
	for(auto cc:ac){
		if(prev.size()==0){
			prev.pb(cc);
		}
		else{
			if(cc.a>prev.back().b){
				prev.pb(cc);
			}
			else{
				prev[prev.size()-1].b=max(prev[prev.size()-1].b,cc.b);
			}
		}
	}
	llo tot=0;
	for(llo i=0;i<prev.size();i++){
		tot+=prev[i].b-prev[i].a+1;
	}
	cout<<tot<<endl;













	return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:67:15: 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 13 ms 1400 KB Output is correct
3 Correct 12 ms 1400 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 352 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 376 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 12 ms 1400 KB Output is correct
17 Correct 82 ms 8804 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 7 ms 376 KB Output is correct
2 Correct 4 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 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 368 ms 504 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 780 ms 79568 KB Output is correct
3 Correct 790 ms 79568 KB Output is correct
4 Correct 823 ms 79696 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 780 ms 79568 KB Output is correct
3 Correct 790 ms 79568 KB Output is correct
4 Correct 823 ms 79696 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 803 ms 79568 KB Output is correct
7 Correct 817 ms 79696 KB Output is correct
8 Correct 813 ms 79596 KB Output is correct
9 Correct 864 ms 79568 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 780 ms 79568 KB Output is correct
3 Correct 790 ms 79568 KB Output is correct
4 Correct 823 ms 79696 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 76 ms 8812 KB Output is correct
7 Correct 79 ms 8812 KB Output is correct
8 Correct 81 ms 8808 KB Output is correct
9 Correct 85 ms 8812 KB Output is correct
10 Correct 78 ms 8812 KB Output is correct
11 Correct 86 ms 8940 KB Output is correct
12 Correct 85 ms 8808 KB Output is correct
13 Correct 83 ms 8812 KB Output is correct
14 Correct 79 ms 8808 KB Output is correct
15 Correct 86 ms 8812 KB Output is correct
16 Correct 86 ms 8936 KB Output is correct
17 Correct 80 ms 8812 KB Output is correct
18 Correct 797 ms 79696 KB Output is correct
19 Correct 802 ms 79744 KB Output is correct
20 Correct 833 ms 79568 KB Output is correct
21 Correct 81 ms 8812 KB Output is correct
22 Correct 84 ms 8808 KB Output is correct
23 Correct 154 ms 504 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 90 ms 9068 KB Output is correct
3 Correct 82 ms 8812 KB Output is correct
4 Correct 831 ms 79824 KB Output is correct
5 Correct 85 ms 8808 KB Output is correct
6 Correct 86 ms 8808 KB Output is correct
7 Correct 87 ms 8808 KB Output is correct
8 Correct 83 ms 8808 KB Output is correct
9 Correct 84 ms 8812 KB Output is correct
10 Correct 83 ms 8812 KB Output is correct
11 Correct 82 ms 8812 KB Output is correct
12 Correct 83 ms 8812 KB Output is correct
13 Correct 91 ms 8812 KB Output is correct
14 Correct 828 ms 79696 KB Output is correct
15 Correct 79 ms 8812 KB Output is correct
16 Correct 805 ms 79568 KB Output is correct
17 Correct 789 ms 79568 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 13 ms 1400 KB Output is correct
3 Correct 12 ms 1400 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 352 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 376 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 12 ms 1400 KB Output is correct
17 Correct 82 ms 8804 KB Output is correct
18 Incorrect 5 ms 376 KB Output isn't correct