Submission #166937

#	Time	Username	Problem	Language	Result	Execution time	Memory
166937		AKaan37	Port Facility (JOI17_port_facility)	C++17	0 / 100	2 ms	380 KiB

port_facility

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define int long long
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t;
int cev=1;
PII p[li];
string s;
vector<int> v[4];

inline int mul(int x,int y){
	return (x%mod)*(y%mod)%mod;
}

inline int f(int sira,int sec,int sec1){
	flag=0;
	if(sira>n)return 1;
	if(p[sec].se>p[sira].se || p[sira].fi>p[sec].se){
		if(p[sira].se>p[sec].se)
			f(sira+1,sira,sec1);
		else f(sira+1,sec,sec1);
		flag=1;
	}
	if(p[sec1].se>p[sira].se || p[sira].fi>p[sec1].se){
		if(p[sira].se>p[sec1].se)
			f(sira+1,sec,sira);
		else f(sira+1,sec,sec1);
		flag=1;
	}
	
}

main(void){
	scanf("%lld",&n);
	FOR{
		scanf("%lld %lld",&p[i].fi,&p[i].se);
	}
	sort(p+1,p+n+1);
	FOR{
		flag=1;
		int flag1=1;
		for(int j=0;j<(int)v[0].size();j++){
			if(v[0][j]>p[i].fi && v[0][j]<p[i].se)flag=0;
		}
		for(int j=0;j<(int)v[1].size();j++){
			if(v[1][j]>p[i].fi && v[1][j]<p[i].se)flag1=0;
		}
		if(flag==1)v[0].pb(p[i].se);
		else if(flag1==1)v[1].pb(p[i].se);
		flag+=flag1;
		cev=mul(cev,flag);
		//~ cout<<cev<<endl;
	}
	printf("%lld\n",cev);
	return 0;
}

Compilation message (stderr)

port_facility.cpp:54:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
port_facility.cpp: In function 'int main()':
port_facility.cpp:55:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
port_facility.cpp:57:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&p[i].fi,&p[i].se);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 12
• Subtask 3: 0 / 56
• Subtask 4: 0 / 22