oj.uz

Submission #169013

# Submission time Handle Problem Language Result Execution time Memory
169013 2019-12-17T14:53:32 Z kshitij_sodani Strange Device (APIO19_strange_device) C++17
5 / 100
 676 ms 33852 KB 
#include <iostream>
#include <bits/stdc++.h>
#include <stdio.h>
using namespace std;
typedef   unsigned long long int llo;
#define pb push_back

#define a first
#define b second

#include <iostream>
#include <fstream>
#include <set>
#include <map>
#include <algorithm>
#include <vector>

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	llo n,aa,bb;
	cin>>n>>aa>>bb;
	pair<llo,llo> it[n];
	for(llo i=0;i<n;i++){
		cin>>it[i].a>>it[i].b;
	}
	if((bb+1)%aa==0){
		
		vector<pair<llo,llo>> tt;
		for(llo i=0;i<n;i++){
			it[i].b%=bb;
			it[i].a%=bb;
			if(it[i].a<=it[i].b){
				tt.pb(make_pair(it[i].a,it[i].b));
			}
			else{
				tt.pb(make_pair(it[i].a,bb-1));
				tt.pb(make_pair(0,it[i].b));
			}

		}
		sort(tt.begin(),tt.end());
		llo tot=0;
		llo st,end;
		for(llo i=0;i<tt.size();i++){
			if(i==0){
				st=tt[i].a;
				end=tt[i].b;
			}
			else{
				if(tt[i].a<=end){
					end=max(end,tt[i].b);
				}
				else{
					tot+=end-st+1;
					st=tt[i].a;
					end=tt[i].b;
				}
			}
		}
		tot+=end-st+1;
		cout<<tot<<endl;
	}
	else{

			vector<pair<llo,llo>> tt;
		/*	llo num[2];
			num[0]=0;
			num[1]=0;
			//llo co=0;
			llo aaa;
			llo aab;

			llo cc=aa*bb;
		//	int co=aa;
			aaa=aa%(1000000000);
			aab=(aa-aaa)/(1000000000);

			llo bba;
			llo bbb;
			bba=bb%(1000000000);
			bbb=(bb-bba)/(1000000000);
			num[0]+=aaa*bba;

			llo ccc=aaa*bbb;
			ccc=(ccc%1000000000)*(1000000000);
			num[0]+=ccc%1000000000;
			num[1]+=ccc/1000000000;

			ccc=aab*bba;
			ccc=(ccc%1000000000)*(1000000000);
			num[0]+=ccc%1000000000;
			num[1]+=ccc/1000000000;

			llo x=num[0]/1000000000000000000;

			num[0]%=1000000000000000000;
			num[1]+=x;
			num[1]+=bbb*aab;*/
			
			llo co=0;
			llo ac=aa;
			while(ac>0){
				ac/=10;
				co+=1;
			}
			llo bc=bb;
			while(bc>0){
				bc/=10;
				co+=1;
			}
			llo cc;
		//	cout<<co<<endl;
			if(co<=(llo)19){
				cc=aa*bb;
			}
			else{
				llo tot=0;
				for(int i=0;i<n;i++){
					tot+=it[i].b-it[i].a+1;
				}
				cout<<tot<<endl;
				return 0;
			}
		//	cout<<cc<<endl;
		//	cout<<"done";
			for(llo i=0;i<n;i++){
				if(co<=19){
					it[i].b%=cc;
				}
				if(co<=19){
					it[i].a%=cc;
				}
			//	it[i].b%=bb;

				
			//	it[i].a%=bb;
				//it[i].a%=cc;
				if(it[i].a<=it[i].b){
					tt.pb(make_pair(it[i].a,it[i].b));
				}
				else{
					tt.pb(make_pair(it[i].a,cc-1));
					tt.pb(make_pair(0,it[i].b));
				}

			}
			sort(tt.begin(),tt.end());
			llo tot=0;

			llo st,end;
			for(llo i=0;i<tt.size();i++){
				if(i==0){
					st=tt[i].a;
					end=tt[i].b;
				}
				else{
					if(tt[i].a<=end){
						end=max(end,tt[i].b);
					}
					else{
						tot+=end-st+1;
						//tot+=end-st+1;
						st=tt[i].a;
						end=tt[i].b;
					//	cout<<tot[1]<<" "<<tot[0]<<endl;
					}

				}
			}
		//	cout<<aaa<<" "<<aab<<" "<<bba<<" "<<bbb<<endl;
		//	cout<<num[1]<<" "<<num[0]<<endl;
			tot+=end-st+1;
			cout<<tot;
			cout<<endl;
		
	}

}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:120:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<n;i++){
                 ~^~
strange_device.cpp:152:11: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
    llo st,end;
           ^~~
strange_device.cpp:174:7: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized]
    tot+=end-st+1;
    ~~~^~~~~~~~~~
strange_device.cpp:45:10: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
   llo st,end;
          ^~~
strange_device.cpp:62:6: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized]
   tot+=end-st+1;
   ~~~^~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 888 KB Output is correct
3 Correct 8 ms 764 KB Output is correct
4 Incorrect 2 ms 504 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 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 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 452 ms 33468 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 604 ms 33748 KB Output is correct
3 Incorrect 615 ms 33748 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 604 ms 33748 KB Output is correct
3 Incorrect 615 ms 33748 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 604 ms 33748 KB Output is correct
3 Incorrect 615 ms 33748 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 66 ms 5616 KB Output is correct
3 Correct 66 ms 4200 KB Output is correct
4 Correct 676 ms 33496 KB Output is correct
5 Correct 68 ms 5880 KB Output is correct
6 Correct 66 ms 5868 KB Output is correct
7 Correct 66 ms 5740 KB Output is correct
8 Correct 68 ms 5920 KB Output is correct
9 Correct 66 ms 5716 KB Output is correct
10 Correct 66 ms 5744 KB Output is correct
11 Correct 67 ms 4976 KB Output is correct
12 Correct 60 ms 5996 KB Output is correct
13 Correct 66 ms 6176 KB Output is correct
14 Correct 661 ms 33852 KB Output is correct
15 Incorrect 68 ms 6000 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 888 KB Output is correct
3 Correct 8 ms 764 KB Output is correct
4 Incorrect 2 ms 504 KB Output isn't correct
5 Halted 0 ms 0 KB -