Submission #1234525

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234525		Bui_Quoc_Cuong	Exhibition (JOI19_ho_t2)	C++20	0 / 100	0 ms	324 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define ll long long
#define FOR(i, a, b) for(int i = a; i <= (int)b; i++)
#define FORD(i, a, b) for(int i = a; i >= (int)b; i--)
#define ALL(A) A.begin(), A.end()   
using namespace std;
const int maxn = 100005;

int n, m;
int c[maxn], v[maxn], s[maxn], ID[maxn];

int main(){
    cin.tie(nullptr) -> sync_with_stdio(false);
    #define taskname "kieuoanh"
    if(fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin); freopen(taskname".out", "w", stdout);
    }
    cin >> n >> m;
    FOR(i, 1, n) cin >> s[i] >> v[i];
    FOR(i, 1, m) cin >> c[i];
    FOR(i, 1, n) ID[i] = i;
    sort(ID + 1, ID + 1 + n, [&](int a, int b){
        if(v[a] == v[b]) return s[a] < s[b];
        return v[a] < v[b];
    });
    sort(c + 1, c + 1 + m);
    int ans = 0;
    int it = m;
    FORD(id, n, 1){
        int i = ID[id];
        if(it - 1 >= 1 && s[i] <= c[it - 1]) ans++;
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen(taskname".inp", "r", stdin); freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:16:53: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen(taskname".inp", "r", stdin); freopen(taskname".out", "w", stdout);
      |                                              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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