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Submission #206601

# Submission time Handle Problem Language Result Execution time Memory
206601 2020-03-04T07:44:45 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
65 / 100
 640 ms 40832 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:77:16: 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
10.0 / 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 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 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 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 67 ms 5020 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 Incorrect 5 ms 376 KB Output isn't correct
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 409 ms 16852 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 560 ms 40832 KB Output is correct
3 Correct 544 ms 40768 KB Output is correct
4 Correct 545 ms 40660 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 560 ms 40832 KB Output is correct
3 Correct 544 ms 40768 KB Output is correct
4 Correct 545 ms 40660 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 557 ms 40604 KB Output is correct
7 Correct 560 ms 40772 KB Output is correct
8 Correct 555 ms 40820 KB Output is correct
9 Correct 602 ms 40768 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 560 ms 40832 KB Output is correct
3 Correct 544 ms 40768 KB Output is correct
4 Correct 545 ms 40660 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 59 ms 4968 KB Output is correct
7 Correct 61 ms 4968 KB Output is correct
8 Correct 60 ms 4972 KB Output is correct
9 Correct 61 ms 4968 KB Output is correct
10 Correct 60 ms 5096 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 4968 KB Output is correct
14 Correct 57 ms 4968 KB Output is correct
15 Correct 65 ms 4968 KB Output is correct
16 Correct 61 ms 5020 KB Output is correct
17 Correct 59 ms 4968 KB Output is correct
18 Correct 555 ms 40776 KB Output is correct
19 Correct 560 ms 40768 KB Output is correct
20 Correct 616 ms 40640 KB Output is correct
21 Correct 63 ms 4964 KB Output is correct
22 Correct 57 ms 4968 KB Output is correct
23 Correct 177 ms 8648 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 69 ms 4968 KB Output is correct
3 Correct 63 ms 4948 KB Output is correct
4 Correct 640 ms 40724 KB Output is correct
5 Correct 74 ms 5200 KB Output is correct
6 Correct 62 ms 4972 KB Output is correct
7 Correct 64 ms 4968 KB Output is correct
8 Correct 63 ms 4968 KB Output is correct
9 Correct 61 ms 4972 KB Output is correct
10 Correct 61 ms 4968 KB Output is correct
11 Correct 64 ms 4972 KB Output is correct
12 Correct 58 ms 4968 KB Output is correct
13 Correct 63 ms 4968 KB Output is correct
14 Correct 606 ms 40832 KB Output is correct
15 Correct 61 ms 4968 KB Output is correct
16 Correct 542 ms 40640 KB Output is correct
17 Correct 552 ms 40696 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 10 ms 888 KB Output is correct
3 Correct 10 ms 888 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 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 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 67 ms 5020 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Incorrect 5 ms 376 KB Output isn't correct
21 Halted 0 ms 0 KB -