結果
| 問題 | No.3648 Overbooked Meeting Rooms |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2026-08-28 21:48:17 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.90.0) |
| 結果 |
AC
|
| 実行時間 | 1 ms / 2,000 ms |
| + 436µs | |
| コード長 | 1,860 bytes |
| 記録 | |
| コンパイル時間 | 2,023 ms |
| コンパイル使用メモリ | 331,844 KB |
| 実行使用メモリ | 6,272 KB |
| 最終ジャッジ日時 | 2026-08-28 21:48:55 |
| 合計ジャッジ時間 | 3,806 ms |
|
ジャッジサーバーID (参考情報) |
judge3_0 / judge2_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
コンパイルメッセージ
main.cpp: In function 'void solve()':
main.cpp:39:12: warning: ignoring return value of 'constexpr std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp = int; _Alloc = std::allocator<int>; reference = int&; size_type = long unsigned int]', declared with attribute 'nodiscard' [-Wunused-result]
39 | b[i];
| ^
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/vector:68,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/functional:66,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:55,
from main.cpp:1:
/home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/stl_vector.h:1261:7: note: declared here
1261 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ^~~~~~~~
ソースコード
#include <bits/stdc++.h>
// #include <atcoder/all>
using namespace std;
// using namespace atcoder;
// using mint = modint998244353;
//using mint = modint1000000007;
using ll = long long;
using P = pair<ll, ll>;
using T = tuple<ll, ll, ll>;
template<typename T_>bool chmax(T_& a, const T_& b) { if (a < b) { a = b;return true; } else { return false; } }
template<typename T_>bool chmin(T_& a, const T_& b) { if (a > b) { a = b;return true; } else { return false; } }
#ifdef LOCAL
template<class T, class U> ostream& operator<<(ostream& o, const pair<T, U>& p) { return o << "(" << p.first << ", " << p.second << ")"; }
template<class... T> ostream& operator<<(ostream& o, const tuple<T...>& t) { o << "("; apply([&o](auto&&... a) { int c = 0; (((o << (c++ ? ", " : "") << a)), ...); }, t); return o << ")"; }
template<class V> auto operator<<(ostream& o, const V& v) -> std::enable_if_t<!std::is_same_v<V, std::string> && !std::is_same_v<V, std::string_view>, decltype(v.begin(), o)> { o << "{"; int c = 0; for (auto& x : v) o << (c++ ? ", " : "") << x; return o << "}"; }
#define dbg(...) cerr<<"["<<#__VA_ARGS__<<"]: ",([](auto&&... a){((cerr<<a<<' '),...);})(__VA_ARGS__),cerr<<'\n'
#else
#define dbg(...) void(0)
#endif
const int di[] = { -1,0,1,0 };
const int dj[] = { 0,-1,0,1 };
const int inf = 0x3f3f3f3f;
const long long INF = 0x3f3f3f3f3f3f3f3fLL;
void solve() {
int n, m; cin >> n >> m;
vector<int> a(n, 0), b(m, 0);
int ans = 0;
vector<int> c(m, 0);
for (int i = 0; i < n; i++) {
cin >> a[i];
a[i]--;
c[a[i]]++;
}
for (int i = 0; i < m; i++) {
cin >> b[i];
b[i];
ans += max(0, c[i] - b[i]);
}
cout << ans << "\n";
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
// cin >> t;
while (t--) {
solve();
}
}