Submission #1309734

#	Time	Username	Problem	Language	Result	Execution time	Memory
1309734		kawhiet	Examination (JOI19_examination)	C++20	Compilation error	0 ms	0 KiB

examination

#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q;
    cin >> n >> q;
    vector<int> s(n), t(n);
    for (int i = 0; i < n; i++) {
        cin >> s[i] >> t[i];
    }
    vector<int> ord(n);
    ranges::iota(ord, 0);
    ranges::sort(ord, [&](int i, int j) {
        return s[i] + t[i] < s[j] + t[j];
    });
    vector<int> a(n), b(n), k(n);
    for (int i = 0; i < n; i++) {
        a[i] = s[ord[i]];
        b[i] = t[ord[i]];
        k[i] = a[i] + b[i];
    }
    while (q--) {
        int x, y, z;
        cin >> x >> y >> z;
        z = max(z, x + y);
        int pos = ranges::lower_bound(k, z) - k.begin();
        if (pos == n) {
            cout << 0 << '\n';
            continue;
        }
        int ans = n - pos;
        for (int i = pos; i < n; i++) {
            if (a[i] < x) {
                ans--;
            }
            if (b[i] < y) {
                ans--;
            }
        }
        cout << ans << '\n';
    }
    return 0;
}

Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:14:13: error: 'iota' is not a member of 'std::ranges'
   14 |     ranges::iota(ord, 0);
      |             ^~~~
examination.cpp:14:13: note: suggested alternatives:
In file included from /usr/include/c++/13/numeric:62,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:58,
                 from examination.cpp:1:
/usr/include/c++/13/bits/stl_numeric.h:88:5: note:   'std::iota'
   88 |     iota(_ForwardIterator __first, _ForwardIterator __last, _Tp __value)
      |     ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:89:
/usr/include/c++/13/ranges:716:26: note:   'std::ranges::views::iota'
  716 |   inline constexpr _Iota iota{};
      |                          ^~~~