제출 #786240

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
786240		KN200711	Exhibition (JOI19_ho_t2)	C++14	100 / 100	55 ms	1600 KiB

joi2019_ho_t2

# include <bits/stdc++.h>
# define fi first
# define se second
using namespace std;

int main() {
	int N, M;
	scanf("%d %d", &N, &M);
	vector< pair<int, int> > S(N);
	for(int i=0;i<N;i++) {
		scanf("%d %d", &S[i].se, &S[i].fi);
	}
	vector<int> T(M);
	for(int i=0;i<M;i++) scanf("%d", &T[i]);
	sort(S.begin(), S.end());
	sort(T.begin(), T.end());
	
	int ans = 0, ls = M-1;
	for(int i=N-1;i>=0;i--) {
		if(ls >= 0 && S[i].se <= T[ls]) {
			ans++;
			ls--;
		}
	}
	printf("%d\n", ans);
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  scanf("%d %d", &N, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |   scanf("%d %d", &S[i].se, &S[i].fi);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:14:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  for(int i=0;i<M;i++) scanf("%d", &T[i]);
      |                       ~~~~~^~~~~~~~~~~~~

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