제출 #129386

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
129386		hungcung	Exhibition (JOI19_ho_t2)	C++17	0 / 100	2 ms	380 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
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;
}
signed main(){
	scanf("%d %d",&n,&m);
	for(int i=0;i<n;i++){
		scanf("%d %d",&a[i].first,&a[i].second);
	}
	for(int i=0;i<m;i++){
		scanf("%d",&c[i]);
	}
	sort(a,a+n,cmp);
	sort(c,c+m);
	dem=n-1;
	for(int i=m-1;i>=0;i--){
		while(dem>=0&&a[dem].first>c[i]){
			dem--;
		}
		if(dem>=0){
			ans++;
			dem--;
		}
	}
	printf("%d",ans);
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:9:7: 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:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a[i].first,&a[i].second);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&c[i]);
   ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50