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Submission #206595

# Submission time Handle Problem Language Result Execution time Memory
206595 2020-03-04T07:32:35 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
35 / 100
 642 ms 40896 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){
			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:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(llo i=0;i<prev.size();i++){
               ~^~~~~~~~~~~~
strange_device.cpp:34:6: warning: unused variable 's' [-Wunused-variable]
  llo s=0;
      ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 892 KB Output is correct
3 Correct 11 ms 888 KB Output is correct
4 Correct 5 ms 376 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 4 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 256 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 63 ms 4972 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 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 406 ms 16868 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 605 ms 40768 KB Output is correct
3 Correct 546 ms 40672 KB Output is correct
4 Correct 540 ms 40896 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 605 ms 40768 KB Output is correct
3 Correct 546 ms 40672 KB Output is correct
4 Correct 540 ms 40896 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 560 ms 40772 KB Output is correct
7 Correct 567 ms 40640 KB Output is correct
8 Correct 566 ms 40640 KB Output is correct
9 Correct 584 ms 40776 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 605 ms 40768 KB Output is correct
3 Correct 546 ms 40672 KB Output is correct
4 Correct 540 ms 40896 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 57 ms 4968 KB Output is correct
7 Correct 63 ms 4964 KB Output is correct
8 Correct 65 ms 4968 KB Output is correct
9 Correct 59 ms 4968 KB Output is correct
10 Correct 56 ms 4968 KB Output is correct
11 Correct 59 ms 4968 KB Output is correct
12 Correct 57 ms 4968 KB Output is correct
13 Correct 62 ms 4968 KB Output is correct
14 Correct 56 ms 4968 KB Output is correct
15 Correct 62 ms 4972 KB Output is correct
16 Correct 63 ms 4968 KB Output is correct
17 Correct 57 ms 4968 KB Output is correct
18 Correct 560 ms 40688 KB Output is correct
19 Correct 542 ms 40640 KB Output is correct
20 Correct 612 ms 40836 KB Output is correct
21 Correct 60 ms 4968 KB Output is correct
22 Correct 56 ms 4972 KB Output is correct
23 Correct 173 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 61 ms 4968 KB Output is correct
4 Correct 642 ms 40640 KB Output is correct
5 Correct 64 ms 4968 KB Output is correct
6 Correct 60 ms 4968 KB Output is correct
7 Correct 63 ms 4968 KB Output is correct
8 Correct 63 ms 4952 KB Output is correct
9 Correct 65 ms 4984 KB Output is correct
10 Correct 63 ms 4968 KB Output is correct
11 Correct 61 ms 4968 KB Output is correct
12 Correct 56 ms 4968 KB Output is correct
13 Correct 60 ms 4972 KB Output is correct
14 Correct 591 ms 40640 KB Output is correct
15 Correct 61 ms 4968 KB Output is correct
16 Correct 553 ms 40808 KB Output is correct
17 Correct 552 ms 40640 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 892 KB Output is correct
3 Correct 11 ms 888 KB Output is correct
4 Correct 5 ms 376 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 4 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 256 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 63 ms 4972 KB Output is correct
18 Incorrect 5 ms 376 KB Output isn't correct