제출 #228932

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
228932		JodsintZ	Exhibition (JOI19_ho_t2)	C++14	0 / 100	5 ms	384 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

#define pii pair<int, int>
#define x first
#define y second

using namespace std;

const int N = 1e5+5;

int n, m, c[N], ptr1, ans;
vector<pii> a;

int main() {
    scanf("%d %d" ,&n, &m);
    for(int i = 0, C, v; i < n; i++) {
        scanf("%d %d", &C, &v);
        a.emplace_back(v, C);
    }
    for(int i = 0; i < m; i++) {
        scanf("%d", c + i);
    }
    sort(c+0, c+n, greater<int>() );
    sort(a.begin(), a.end(), greater<pii>() );

    for(int i = 0; i < m; i++) {
        while(ptr1 < n && a[ptr1].y > c[i] ) ptr1++;
        if(ptr1 < n) ans++, ptr1++;
    }

    printf("%d\n", ans);

}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:15:10: 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:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &C, &v);
         ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", c + i);
         ~~~~~^~~~~~~~~~~~~

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