Submission #133208

#	Time	Username	Problem	Language	Result	Execution time	Memory
133208		dantoh000	Exhibition (JOI19_ho_t2)	C++14	100 / 100	85 ms	3708 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
bool cmp(ii a, ii b){
    if (a.second != b.second) return a.second<b.second;
    else return a.first<b.first;
}
int main(){
    int n,m;
    scanf("%d%d",&n,&m);
    ii a[n];
    for (int i = 0; i < n; i++){
        scanf("%d%d",&a[i].first,&a[i].second);
    }
    int b[m];
    sort(a,a+n,cmp);
    for (int i =0 ; i<m; i++) scanf("%d",&b[i]);
    sort(b,b+m);
    int ans = 0;
    for (int i = n-1; i >= 0 && ans < m; i--){
        //printf("%d %d\n",b[m-ans-1],a[i].first);
        if (a[i].first <= b[m-ans-1]){
            ans++;
        }
    }
    printf("%d",ans);



}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:10:10: 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:13:14: 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:17:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i =0 ; i<m; i++) scanf("%d",&b[i]);
                               ~~~~~^~~~~~~~~~~~

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