oj.uz

Submission #342712

# Submission time Handle Problem Language Result Execution time Memory
342712 2021-01-02T16:36:46 Z NhatMinh0208 Strange Device (APIO19_strange_device) C++17
100 / 100
 1852 ms 85088 KB 
/*
	Normie's Template v2.0
*/
 
// Standard library in one include.
#include <bits/stdc++.h>
using namespace std;
 
// ordered_set library.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set(el) tree<el,null_type,less<el>,rb_tree_tag,tree_order_statistics_node_update>
 
// AtCoder library. (Comment out these two lines if you're not submitting in AtCoder.) (Or if you want to use it in other judges, run expander.py first.)
//#include <atcoder/all>
//using namespace atcoder;
 
//Pragmas (Comment out these three lines if you're submitting in szkopul.)
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
//File I/O.
#define FILE_IN "cseq.inp"
#define FILE_OUT "cseq.out"
#define ofile freopen(FILE_IN,"r",stdin);freopen(FILE_OUT,"w",stdout)
 
//Fast I/O.
#define fio ios::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define nfio cin.tie(0);cout.tie(0)
#define endl "\n"
 
//Order checking.
#define ord(a,b,c) ((a>=b)and(b>=c))
 
//min/max redefines, so i dont have to resolve annoying compile errors.
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))

//Constants.
#define MOD (ll(998244353))
#define MAX 300001
#define mag 320
 
//Pairs and 3-pairs.
#define p1 first
#define p2 second.first
#define p3 second.second
#define fi first
#define se second
#define pii(element_type) pair<element_type,element_type>
#define piii(element_type) pair<element_type,pii(element_type)>
 
//Quick power of 2.
#define pow2(x) (ll(1)<<x)
 
//Short for-loops.
#define ff(i,__,___) for(int i=__;i<=___;i++)
#define rr(i,__,___) for(int i=__;i>=___;i--)
 
//Typedefs.
#define bi BigInt
typedef long long ll;
typedef long double ld;
typedef short sh;
//---------END-------//
ll n,m,i,j,k,t,t1,u,v,a,b,res;
ll l[1000001],r[1000001];
vector<ll> pos;
vector<ll> diff;
int main()
{
	cin>>n;
	cin>>a>>b;
	for (i=1;i<=n;i++)
	{
		cin>>l[i]>>r[i];
	}
	u=gcd(a,b+1);
	u=a/u;
	if (ll(1e18)/u<b)
	{
	for (i=1;i<=n;i++)
	{
		v+=r[i]-l[i]+1;
	}
	cout<<v;
	}
	else
	{
		t=u*b;
	//	cout<<t<<endl;
		for (i=1;i<=n;i++)
		{
			u=l[i]%t;
			v=(r[i]+1)%t;
			if (r[i]-l[i]+1>=t) return cout<<t,0;
			else
			{
				if (u<v)
				{
					pos.push_back(u);
					pos.push_back(v);
				}
				else
				{
					pos.push_back(u);
					pos.push_back(t);
					pos.push_back(0);
					pos.push_back(v);
				}
			}
		}
		sort(pos.begin(),pos.end());
		auto last=unique(pos.begin(),pos.end());
		pos.erase(last,pos.end());
		for (int g : pos) diff.push_back(0);
		for (i=1;i<=n;i++)
		{
			u=l[i]%t;
			v=(r[i]+1)%t;
	//		cout<<u<<' '<<v<<endl;
			if (r[i]-l[i]+1>=t) return cout<<t,0;
			else
			{
				if (u<v)
				{
					a=lower_bound(pos.begin(),pos.end(),u)-pos.begin();
					diff[a]++;
					a=lower_bound(pos.begin(),pos.end(),v)-pos.begin();
					diff[a]--;
				}
				else
				{
					a=lower_bound(pos.begin(),pos.end(),u)-pos.begin();
					diff[a]++;
					a=lower_bound(pos.begin(),pos.end(),t)-pos.begin();
					diff[a]--;
					a=lower_bound(pos.begin(),pos.end(),0)-pos.begin();
					diff[a]++;
					a=lower_bound(pos.begin(),pos.end(),v)-pos.begin();
					diff[a]--;
				}
			}
		}
		ll cur=0;
		for (i=0;i<pos.size();i++)
		{
			cur+=diff[i];
		//	cout<<cur<<' '<<i<<' '<<pos[i]<<endl;
			if ((cur)and(i<pos.size()-1)) res+=pos[i+1]-pos[i];
		}
		cout<<res;
	}
}

Compilation message

strange_device.cpp:20: warning: ignoring #pragma comment  [-Wunknown-pragmas]
   20 | #pragma comment(linker, "/stack:200000000")
      | 
strange_device.cpp: In function 'int main()':
strange_device.cpp:118:12: warning: unused variable 'g' [-Wunused-variable]
  118 |   for (int g : pos) diff.push_back(0);
      |            ^
strange_device.cpp:148:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  148 |   for (i=0;i<pos.size();i++)
      |            ~^~~~~~~~~~~
strange_device.cpp:152:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  152 |    if ((cur)and(i<pos.size()-1)) res+=pos[i+1]-pos[i];
      |                 ~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 18 ms 1260 KB Output is correct
3 Correct 18 ms 1260 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 18 ms 1260 KB Output is correct
17 Correct 188 ms 9052 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 2 ms 492 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 1126 ms 57908 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1768 ms 66676 KB Output is correct
3 Correct 1761 ms 85016 KB Output is correct
4 Correct 1700 ms 84936 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1768 ms 66676 KB Output is correct
3 Correct 1761 ms 85016 KB Output is correct
4 Correct 1700 ms 84936 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1745 ms 85088 KB Output is correct
7 Correct 1799 ms 84876 KB Output is correct
8 Correct 1762 ms 85016 KB Output is correct
9 Correct 1832 ms 84964 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1768 ms 66676 KB Output is correct
3 Correct 1761 ms 85016 KB Output is correct
4 Correct 1700 ms 84936 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 178 ms 9052 KB Output is correct
7 Correct 193 ms 9052 KB Output is correct
8 Correct 171 ms 9056 KB Output is correct
9 Correct 172 ms 9196 KB Output is correct
10 Correct 171 ms 9060 KB Output is correct
11 Correct 175 ms 9180 KB Output is correct
12 Correct 171 ms 9052 KB Output is correct
13 Correct 197 ms 9076 KB Output is correct
14 Correct 168 ms 9052 KB Output is correct
15 Correct 181 ms 9052 KB Output is correct
16 Correct 194 ms 9052 KB Output is correct
17 Correct 168 ms 9052 KB Output is correct
18 Correct 1741 ms 84848 KB Output is correct
19 Correct 1720 ms 84984 KB Output is correct
20 Correct 1810 ms 84924 KB Output is correct
21 Correct 181 ms 8972 KB Output is correct
22 Correct 164 ms 9052 KB Output is correct
23 Correct 508 ms 26584 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 180 ms 9052 KB Output is correct
3 Correct 177 ms 9052 KB Output is correct
4 Correct 1852 ms 84788 KB Output is correct
5 Correct 184 ms 9064 KB Output is correct
6 Correct 177 ms 9052 KB Output is correct
7 Correct 211 ms 9052 KB Output is correct
8 Correct 180 ms 9180 KB Output is correct
9 Correct 175 ms 9052 KB Output is correct
10 Correct 183 ms 9052 KB Output is correct
11 Correct 179 ms 8956 KB Output is correct
12 Correct 169 ms 9052 KB Output is correct
13 Correct 179 ms 9052 KB Output is correct
14 Correct 1825 ms 84820 KB Output is correct
15 Correct 180 ms 9052 KB Output is correct
16 Correct 1703 ms 84956 KB Output is correct
17 Correct 1725 ms 84928 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 18 ms 1260 KB Output is correct
3 Correct 18 ms 1260 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 18 ms 1260 KB Output is correct
17 Correct 188 ms 9052 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 492 KB Output is correct
26 Correct 2 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 1126 ms 57908 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1768 ms 66676 KB Output is correct
31 Correct 1761 ms 85016 KB Output is correct
32 Correct 1700 ms 84936 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1745 ms 85088 KB Output is correct
35 Correct 1799 ms 84876 KB Output is correct
36 Correct 1762 ms 85016 KB Output is correct
37 Correct 1832 ms 84964 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 178 ms 9052 KB Output is correct
40 Correct 193 ms 9052 KB Output is correct
41 Correct 171 ms 9056 KB Output is correct
42 Correct 172 ms 9196 KB Output is correct
43 Correct 171 ms 9060 KB Output is correct
44 Correct 175 ms 9180 KB Output is correct
45 Correct 171 ms 9052 KB Output is correct
46 Correct 197 ms 9076 KB Output is correct
47 Correct 168 ms 9052 KB Output is correct
48 Correct 181 ms 9052 KB Output is correct
49 Correct 194 ms 9052 KB Output is correct
50 Correct 168 ms 9052 KB Output is correct
51 Correct 1741 ms 84848 KB Output is correct
52 Correct 1720 ms 84984 KB Output is correct
53 Correct 1810 ms 84924 KB Output is correct
54 Correct 181 ms 8972 KB Output is correct
55 Correct 164 ms 9052 KB Output is correct
56 Correct 508 ms 26584 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 180 ms 9052 KB Output is correct
59 Correct 177 ms 9052 KB Output is correct
60 Correct 1852 ms 84788 KB Output is correct
61 Correct 184 ms 9064 KB Output is correct
62 Correct 177 ms 9052 KB Output is correct
63 Correct 211 ms 9052 KB Output is correct
64 Correct 180 ms 9180 KB Output is correct
65 Correct 175 ms 9052 KB Output is correct
66 Correct 183 ms 9052 KB Output is correct
67 Correct 179 ms 8956 KB Output is correct
68 Correct 169 ms 9052 KB Output is correct
69 Correct 179 ms 9052 KB Output is correct
70 Correct 1825 ms 84820 KB Output is correct
71 Correct 180 ms 9052 KB Output is correct
72 Correct 1703 ms 84956 KB Output is correct
73 Correct 1725 ms 84928 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 1 ms 364 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 17 ms 1260 KB Output is correct
80 Correct 1820 ms 84916 KB Output is correct
81 Correct 1840 ms 84812 KB Output is correct
82 Correct 1818 ms 84884 KB Output is correct
83 Correct 1849 ms 84892 KB Output is correct
84 Correct 1792 ms 84748 KB Output is correct
85 Correct 1776 ms 84964 KB Output is correct
86 Correct 502 ms 26584 KB Output is correct
87 Correct 1 ms 492 KB Output is correct