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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#634286#5109. Spider WalkStayAloneTL 0ms0kbC++142.4kb2024-10-12 17:00:412024-10-12 17:00:42

Judging History

你现在查看的是最新测评结果

  • [2024-10-12 17:00:42]
  • 评测
  • 测评结果:TL
  • 用时:0ms
  • 内存:0kb
  • [2024-10-12 17:00:41]
  • 提交

answer

// Problem: P9447 [ICPC2021 WF] Spider Walk
// Contest: Luogu
// URL: https://www.luogu.com.cn/problem/P9447
// Memory Limit: 256 MB
// Time Limit: 6000 ms
// 
// Powered by CP Editor (https://cpeditor.org)

#include <bits/stdc++.h>
#define rep1(i, l, r) for (int i = l; i <= int(r); ++i)
#define rep2(i, l, r) for (int i = l; i >= int(r); --i)
#define rer(i, l, r, a) rep1(i, l, r) read(a[i])
#define ptc putchar
#define il inline
#define eb emplace_back
#define ef emplace_front
#define mp make_pair
#define fst first
#define snd second
#define sqr(x) ((x) * (x))
#define ls(x) x << 1
#define rs(x) x << 1 | 1
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
// typedef __int128 bll;
// typedef unsigned __int128 ubll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 2e5 + 10, MAXM = 5e5 + 10;
const int LOGN = log2(MAXN) + 1, inf = ~0U >> 2, INF = ~0U >> 1;
const int dx[] = {0, 0, 1, -1}, dy[] = {1, -1, 0, 0};
namespace stupid_lrc {
	template <typename T> il bool read(T &x) {
		x = 0; bool f = false; char ch;
		while (!isdigit(ch = getchar())) {
			f ^= !(ch ^ '-');
			if (ch == EOF) return false;
		}
		while (isdigit(ch)) x = (x << 1) + (x << 3) + (ch & 15), ch = getchar();
		if (f) x = ~x + 1; return true;
	}
	il int read() {int x; read(x); return x;}

	template <typename T> il bool read(pair <T, T> &x) {return read(x.fst) && read(x.snd);}
	
	template <typename T> il void gmin(T &x, T y) {x = x < y ? x : y;}
	
	template <typename T> il void gmax(T &x, T y) {x = x > y ? x : y;}

	template <typename T, typename ...L>
	il bool read(T &x, L &...y) {return read(x) && read(y...);}

	template <typename T> il T lowbit(const T &x) {return x & -x;}
}
using namespace stupid_lrc;
int n, m, s, f[MAXN]; pii a[MAXM];

il void change(int x) {
	gmin(f[x], min(f[x % n + 1], f[x > 1 ? x - 1 : n]) + 1);
}

il void spread(int x) {
	auto dis = [&](int x, int y) {
		if (x > y) swap(x, y);
		return min(y - x, x + n - y);
	};
	rep1(i, 1, n) gmin(f[i], f[x] + dis(i, x));
}

int main() {
	read(n, m, s); rer(i, 1, m, a);
	sort(a + 1, a + 1 + n, greater<>());
	rep1(i, 1, n) f[i] = inf;
	f[s] = 0; spread(s);
	rep1(i, 1, m) {
		int x = a[i].snd, y = x % n + 1; swap(f[x], f[y]);
		change(x); change(y);
		spread(x); spread(y);
	}
	rep1(i, 1, n) printf("%d\n", f[i]);
	return 0;
}

详细

Test #1:

score: 0
Time Limit Exceeded

input:

200000 500000 116205
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50...

output:


result: