제출 #342712

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
342712		NhatMinh0208	이상한 기계 (APIO19_strange_device)	C++17	100 / 100	1852 ms	85088 KiB

strange_device

/*
	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;
	}
}

컴파일 시 표준 에러 (stderr) 메시지

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 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30