Submission #556611

#	Time	Username	Problem	Language	Result	Execution time	Memory
556611		hibiki	Exhibition (JOI19_ho_t2)	C++11	100 / 100	65 ms	4892 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
using namespace std;

#define PB push_back
#define F first
#define S second

int n,m;
vector<int> frame;
vector<pair<int,int> > pic;

int main()
{
    scanf("%d %d",&n,&m);
    for(int i=0;i<n;i++)
    {
        int a,b;
        scanf("%d %d",&a,&b);
        pic.PB({b,a});
    }
    for(int i=0;i<m;i++)
    {
        int a;
        scanf("%d",&a);
        frame.PB(a);
    }

    sort(pic.begin(),pic.end());
    sort(frame.begin(),frame.end());

    int use=0,frame_i=m-1;
    for(int i=n-1;i>=0;i--)
    {
        if(frame_i<0)break;
        if(pic[i].S<=frame[frame_i])
        {
            use++;
            frame_i--;
        }
    }
    printf("%d\n",use);
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf("%d %d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         scanf("%d",&a);
      |         ~~~~~^~~~~~~~~

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