Submission #127616

#	Time	Username	Problem	Language	Result	Execution time	Memory
127616		IOrtroiii	Exhibition (JOI19_ho_t2)	C++14	100 / 100	87 ms	2424 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

using namespace std;

const int N = 100100;

int c[N];
pair<int, int> a[N];

int main() {
   int n, m;
   scanf("%d %d", &n, &m);
   for (int i = 1; i <= n; ++i) {
      scanf("%d %d", &a[i].second, &a[i].first);
   }
   for (int i = 1; i <= m; ++i) {
      scanf("%d", c + i);
   }
   int ans = 0;
   int ptr = n;
   sort(a + 1, a + n + 1);
   sort(c + 1, c + m + 1);
   for (int i = m; i > 0; --i) {
      while (ptr > 0 && a[ptr].second > c[i]) {
         --ptr;
      }
      if (ptr) {
         ++ans;
         --ptr;
      }
   }
   printf("%d\n", ans);
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:12:9: 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:14:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d %d", &a[i].second, &a[i].first);
       ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:17:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d", c + i);
       ~~~~~^~~~~~~~~~~~~

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