Submission #1287858

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287858		KickingKun	Bubble Sort 2 (JOI18_bubblesort2)	C++20	Compilation error	0 ms	0 KiB

bubblesort2

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

#define ll long long
#define ull unsigned long long
#define ld long double
#define bigint __int128
#define emb emplace_back
#define pb push_back
#define pii pair <int, int>
#define fi first
#define se second
#define all(v) v.begin(), v.end()
#define Task ""

#define MASK(k) (1ull << k)
#define bitcnt(k) __builtin_popcount(k)
#define testBit(n, k) ((n >> k) & 1)
#define flipBit(n, k) (n ^ (1ll << k))
#define offBit(n, k) (n & ~MASK(k))
#define onBit(n, k) (n | (1ll << k))

template <class T> bool minimize(T &a, T b) {if (a > b) {a = b; return true;} return false;}
template <class T> bool maximize(T &a, T b) {if (a < b) {a = b; return true;} return false;}

const int N = 5e5 + 5, lim = 60, mod = 1e9 + 7;
const ll INF = 1e18;

int n, q, a[N];
int x[N], v[N];

namespace sub2 {
	void solve() {
		for (int _ = 1; _ <= q; _++) {
			a[x[_]] = v[_];

			vector <int> b(a, a + n + 1); 
			sort (b.begin() + 1, b.end());
			int ans = 0;
			for (int i = 1; i <= n; i++) {
				int k = upper_bound(b.begin() + 1, b.end(), a[i]) - b.begin() - 1;
				maximize(ans, i - k);
			}
			cout << ans << '\n';
		}
	}
}

namespace sub3 {
	void solve() {

	}
}

namespace sub4 {
	void solve() {

	}
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

	if (fopen(Task".inp", "r")) {
		freopen(Task".inp", "r", stdin);
		freopen(Task".out", "w", stdout);
	}

	cin >> n >> q;
	for (int i = 1; i <= n; i++)
		cin >> a[i];

	for (int i = 0; i < q; i++)
		cin >> x[i] >> v[i], ++x[i];

	if (max(n, q) <= 8e3) sub2::solve();
	else if (max(*max_element(a + 1, a + n + 1), *max_element(v, v + q)) <= 100)
		sub3::solve();
	else sub4::solve();
}

Compilation message (stderr)

bubblesort2.cpp: In function 'int main()':
bubblesort2.cpp:65:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |                 freopen(Task".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bubblesort2.cpp:66:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |                 freopen(Task".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cclpHjeg.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc2U6sl0.o:bubblesort2.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cclpHjeg.o: in function `main':
grader.cpp:(.text.startup+0x189): undefined reference to `countScans(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status