제출 #880045

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
880045		cpptowin	Exhibition (JOI19_ho_t2)	C++17	0 / 100	1 ms	2396 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b){if (a > b) {a = b; return true;} return false;}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b){if (a < b) {a = b; return true;} return false;}
using namespace std;
int n,m,c[maxn];
pii a[maxn];
main()
{
    #define name "TASK"
    if(fopen(name".inp","r"))
    {
       freopen(name".inp","r",stdin);
       freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    cin >> n >> m;
    fo(i,1,n) cin >> a[i].fi >> a[i].se;
    fo(i,1,m) cin >> c[i];
    vi v;
    sort(a + 1,a + n + 1,[](pii a,pii b)
         {
             return a.se > b.se or (a.se == b.se and a.fi < b.fi);
         });
    sort(c + 1,c + m + 1,greater<int>());
    fo(i,1,n)
    {
        int id = v.size() + 1;
        if(id <= m and a[i].fi <= c[id]) v.pb(a[i].se);
    }
    cout << v.size();
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t2.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   24 | main()
      | ^~~~
joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:29:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |        freopen(name".inp","r",stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:30:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |        freopen(name".out","w",stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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