Submission #1180491

#	Time	Username	Problem	Language	Result	Execution time	Memory
1180491		pythontest	Exhibition (JOI19_ho_t2)	C++20	0 / 100	0 ms	324 KiB

joi2019_ho_t2

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
    int n,m;
    scanf("%d %d",&n,&m);
    vector<pair<int,int>> obrazy;
    for(int i=0;i<n;i++){
        int s,v;
        scanf("%d %d",&v,&s);
        obrazy.push_back({v,s});
    }
    vector<int> ramki;
    for(int i=0;i<m;i++){
        int a;
        scanf("%d",&a);
        ramki.push_back(a);
    }
    sort(ramki.begin(),ramki.end());
    sort(obrazy.begin(),obrazy.end());
    vector<int> dp(n+1);
    dp[n]=0;
    for(int i=n-1;i>=0;i--){
        auto ele = lower_bound(ramki.begin(),ramki.end(),obrazy[i].second);
        int ile = ramki.end()-ele;
        dp[i]=max(dp[i+1],dp[i+1]+(ile>dp[i+1]?1:0));
    }
    printf("%d",dp[0]);
    return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         scanf("%d %d",&v,&s);
      |         ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         scanf("%d",&a);
      |         ~~~~~^~~~~~~~~

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