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Submission #206594

# Submission time Handle Problem Language Result Execution time Memory
206594 2020-03-04T07:29:05 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
35 / 100
 618 ms 40936 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;
	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.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:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(llo i=0;i<prev.size();i++){
               ~^~~~~~~~~~~~
strange_device.cpp:81:9: warning: unused variable 'y' [-Wunused-variable]
     int y=1;
         ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 10 ms 884 KB Output is correct
3 Correct 10 ms 888 KB Output is correct
4 Correct 4 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 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 62 ms 4968 KB Output is correct
18 Incorrect 5 ms 380 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 256 KB Output is correct
2 Correct 6 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 400 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 562 ms 40616 KB Output is correct
3 Correct 551 ms 40768 KB Output is correct
4 Correct 564 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 562 ms 40616 KB Output is correct
3 Correct 551 ms 40768 KB Output is correct
4 Correct 564 ms 40896 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 562 ms 40740 KB Output is correct
7 Correct 566 ms 40688 KB Output is correct
8 Correct 557 ms 40936 KB Output is correct
9 Correct 616 ms 40644 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 562 ms 40616 KB Output is correct
3 Correct 551 ms 40768 KB Output is correct
4 Correct 564 ms 40896 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 60 ms 4984 KB Output is correct
7 Correct 61 ms 4968 KB Output is correct
8 Correct 59 ms 4968 KB Output is correct
9 Correct 59 ms 4968 KB Output is correct
10 Correct 66 ms 5100 KB Output is correct
11 Correct 59 ms 4968 KB Output is correct
12 Correct 58 ms 4980 KB Output is correct
13 Correct 63 ms 4968 KB Output is correct
14 Correct 58 ms 4968 KB Output is correct
15 Correct 63 ms 4968 KB Output is correct
16 Correct 62 ms 4968 KB Output is correct
17 Correct 60 ms 4968 KB Output is correct
18 Correct 545 ms 40640 KB Output is correct
19 Correct 550 ms 40768 KB Output is correct
20 Correct 599 ms 40640 KB Output is correct
21 Correct 63 ms 4968 KB Output is correct
22 Correct 56 ms 4968 KB Output is correct
23 Correct 172 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 60 ms 4968 KB Output is correct
4 Correct 618 ms 40660 KB Output is correct
5 Correct 62 ms 4968 KB Output is correct
6 Correct 64 ms 4968 KB Output is correct
7 Correct 60 ms 4968 KB Output is correct
8 Correct 67 ms 4968 KB Output is correct
9 Correct 61 ms 4968 KB Output is correct
10 Correct 60 ms 4980 KB Output is correct
11 Correct 61 ms 4968 KB Output is correct
12 Correct 57 ms 4972 KB Output is correct
13 Correct 63 ms 4968 KB Output is correct
14 Correct 589 ms 40640 KB Output is correct
15 Correct 61 ms 4968 KB Output is correct
16 Correct 546 ms 40768 KB Output is correct
17 Correct 530 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 884 KB Output is correct
3 Correct 10 ms 888 KB Output is correct
4 Correct 4 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 376 KB Output is correct
16 Correct 10 ms 888 KB Output is correct
17 Correct 62 ms 4968 KB Output is correct
18 Incorrect 5 ms 380 KB Output isn't correct