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Submission #206590

# Submission time Handle Problem Language Result Execution time Memory
206590 2020-03-04T07:06:29 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
65 / 100
 5000 ms 79724 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;
	llo s=0;
	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;
		}*/
		if(bb-aa+1>=x){
			s=1;
		}
		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;
	}
	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:71:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(llo i=0;i<prev.size();i++){
              ~^~~~~~~~~~~~
strange_device.cpp:76:8: warning: unused variable 'y' [-Wunused-variable]
    int y=1;
        ^

Subtask #1
10.0 / 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 11 ms 1400 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 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 380 KB Output is correct
16 Correct 12 ms 1400 KB Output is correct
17 Correct 82 ms 8808 KB Output is correct
18 Correct 5 ms 376 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Execution timed out 5072 ms 380 KB Time limit exceeded
3 Halted 0 ms 0 KB -

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 355 ms 384 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 799 ms 79544 KB Output is correct
3 Correct 822 ms 79568 KB Output is correct
4 Correct 826 ms 79724 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 799 ms 79544 KB Output is correct
3 Correct 822 ms 79568 KB Output is correct
4 Correct 826 ms 79724 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 798 ms 79568 KB Output is correct
7 Correct 795 ms 79440 KB Output is correct
8 Correct 802 ms 79568 KB Output is correct
9 Correct 842 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 799 ms 79544 KB Output is correct
3 Correct 822 ms 79568 KB Output is correct
4 Correct 826 ms 79724 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 78 ms 8800 KB Output is correct
7 Correct 79 ms 8812 KB Output is correct
8 Correct 78 ms 8808 KB Output is correct
9 Correct 84 ms 8808 KB Output is correct
10 Correct 79 ms 8812 KB Output is correct
11 Correct 79 ms 8816 KB Output is correct
12 Correct 77 ms 8808 KB Output is correct
13 Correct 84 ms 8812 KB Output is correct
14 Correct 80 ms 8812 KB Output is correct
15 Correct 89 ms 8812 KB Output is correct
16 Correct 84 ms 8812 KB Output is correct
17 Correct 79 ms 8768 KB Output is correct
18 Correct 807 ms 79568 KB Output is correct
19 Correct 806 ms 79696 KB Output is correct
20 Correct 839 ms 79604 KB Output is correct
21 Correct 80 ms 8808 KB Output is correct
22 Correct 83 ms 8812 KB Output is correct
23 Correct 150 ms 376 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 84 ms 8808 KB Output is correct
3 Correct 82 ms 8808 KB Output is correct
4 Correct 830 ms 79696 KB Output is correct
5 Correct 85 ms 8808 KB Output is correct
6 Correct 86 ms 8812 KB Output is correct
7 Correct 85 ms 8808 KB Output is correct
8 Correct 80 ms 8812 KB Output is correct
9 Correct 83 ms 8808 KB Output is correct
10 Correct 79 ms 8812 KB Output is correct
11 Correct 82 ms 8776 KB Output is correct
12 Correct 83 ms 8808 KB Output is correct
13 Correct 84 ms 8860 KB Output is correct
14 Correct 849 ms 79596 KB Output is correct
15 Correct 80 ms 8808 KB Output is correct
16 Correct 794 ms 79520 KB Output is correct
17 Correct 781 ms 79696 KB Output is correct
18 Correct 5 ms 376 KB Output is 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 11 ms 1400 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 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 380 KB Output is correct
16 Correct 12 ms 1400 KB Output is correct
17 Correct 82 ms 8808 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Execution timed out 5072 ms 380 KB Time limit exceeded
21 Halted 0 ms 0 KB -