Submission #129389

#	Time	Username	Problem	Language	Result	Execution time	Memory
129389		hungcung	Exhibition (JOI19_ho_t2)	C++17	100 / 100	85 ms	1656 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC targets ("sse4")
using namespace std;
int n,m,c[100005],dem,ans;
pair<int,int> a[100005];
/*bool cmp(pair<int,int> &x,pair<int,int> &y){
	return x.second<y.second;
}*/
int main(){
	scanf("%d %d",&n,&m);
	for(int i=0;i<n;i++){
		scanf("%d %d",&a[i].second,&a[i].first);
	}
	for(int i=0;i<m;i++){
		scanf("%d",&c[i]);
	}
	sort(a,a+n);
	sort(c,c+m);
	dem=n-1;
	for(int i=m-1;i>=0;i--){
		while(dem>=0&&a[dem].second>c[i]){
			dem--;
		}
		if(dem>=0){
			ans++;
			dem--;
		}
	}
	printf("%d",ans);
}

Compilation message (stderr)

joi2019_ho_t2.cpp:3:0: warning: ignoring #pragma GCC targets [-Wunknown-pragmas]
 #pragma GCC targets ("sse4")
 
joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a[i].second,&a[i].first);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&c[i]);
   ~~~~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50