Submission #171285

#	Time	Username	Problem	Language	Result	Execution time	Memory
171285		dennisstar	Exhibition (JOI19_ho_t2)	C++11	100 / 100	83 ms	5352 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define fi first
#define se second
#define ryan bear
#define all(V) ((V).begin()), ((V).end())
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
typedef vector<int> vim;
typedef vector<ll> vlm;

int N, M;
int S[100010], V[100010], C[100010];
pii ar[100010];

int main() {
	scanf("%d %d", &N, &M);
	for (int i=0; i<N; i++) {
		scanf("%d %d", &S[i], &V[i]);
		ar[i]={V[i], S[i]};
	}
	for (int i=0; i<M; i++) scanf("%d", &C[i]);
	sort(ar, ar+N);
	sort(C, C+M);
	int ans=0;
	for (int i=M-1, j=N-1; i>=0; i--) {
		for (; j>=0; j--) if (ar[j].se<=C[i]) break;
		if (j>=0) ans++;
		j--;
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:19:7: 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:21:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &S[i], &V[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:24:31: 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", &C[i]);
                          ~~~~~^~~~~~~~~~~~~

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