Submission #340504

#	Time	Username	Problem	Language	Result	Execution time	Memory
340504		Kerim	Exhibition (JOI19_ho_t2)	C++17	100 / 100	74 ms	4588 KiB

joi2019_ho_t2

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
PII a[MAXN];int b[MAXN];
int main(){
    //freopen("sample-1.in", "r", stdin);
    int n,m;
    scanf("%d%d",&n,&m);
    for(int i=0;i<n;i++)
    	scanf("%d%d",&a[i].ss,&a[i].ff);
    for(int i=0;i<m;i++)
    	scanf("%d",b+i);
	sort(a,a+n);sort(b,b+m);
	int p=m-1;
	for(int i=n-1;i>=0;i--)	
		if(p>=0 and a[i].ss<=b[p])
			p--;
	printf("%d\n",m-p-1);
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:27:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   27 |     for(int i=0;i<m;i++)
      |     ^~~
joi2019_ho_t2.cpp:29:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   29 |  sort(a,a+n);sort(b,b+m);
      |  ^~~~
joi2019_ho_t2.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
joi2019_ho_t2.cpp:26:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |      scanf("%d%d",&a[i].ss,&a[i].ff);
      |      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:28:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |      scanf("%d",b+i);
      |      ~~~~~^~~~~~~~~~

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