oj.uz

Submission #551229

# Submission time Handle Problem Language Result Execution time Memory
551229 2022-04-20T06:08:00 Z ymm Tropical Garden (IOI11_garden) C++17
49 / 100
 79 ms 45708 KB 
///
///   There's a reason for your defeat, DIO. One simple reason...
///   You pissed me off.
///

#include <bits/stdc++.h>
#define Loop(x,l,r) for(ll x = ll(l); x < ll(r); ++x)
#define LoopR(x,l,r) for(ll x = ll(r)-1; x >= ll(l); --x)
#define Kill(x) exit((cout << (x) << '\n', 0))
typedef long long ll;
typedef std::pair<int,int> pii;
typedef std::pair<ll,ll> pll;
using namespace std;

#ifndef DARD
#include "garden.h"
#include "gardenlib.h"
#else
void answer(int x)
{
	cout << x << ' ';
}
#endif

const int N = 300'010;
vector<int> T[2*N];
int A[2*N];
int deg[2*N], cnt[2*N];

void add_edge(int v, int u)
{
	A[v] = u;
	T[u].push_back(v);
}

int ans[N];
int q, g[N];

bool cyc[2*N];

void dfs(int v, int d)
{
	cnt[d] += v >= N;
	for (int u : T[v])
		dfs(u, d+1);
}

vector<vector<int>> vmod;
int cycs;

void dfs2(int v, int d, int rt)
{
	if (v >= N)
		vmod[d%cycs].push_back(d);
	for (int u : T[v])
		if (u != rt)
			dfs2(u, d+1, rt);
}

void solve(int v)
{
	memset(cyc, 0, sizeof(cyc));
	int u = v;
	cycs = 0;
	do {
		cyc[u] = 1;
		u = A[u];
		++cycs;
	} while (!cyc[u]);
	if (u != v) {
		memset(cnt, 0, sizeof(cnt));
		dfs(v, 0);
		Loop (i,0,q)
			ans[i] += cnt[g[i]];
	} else {
		vmod.clear();
		vmod.resize(cycs);
		dfs2(v, 0, v);
		Loop (i,0,cycs)
			sort(vmod[i].begin(), vmod[i].end());
		Loop (i,0,q) {
			int gm = g[i]%cycs;
			ans[i] += upper_bound(vmod[gm].begin(),
			              vmod[gm].end(), g[i]) - vmod[gm].begin();
		}
	}
}

void count_routes(int n, int m, int p, int r[][2], int q, int g[])
{
	Loop (i,0,m) {
		deg[r[i][0]]++;
		deg[r[i][1]]++;
	}
	Loop (i,0,m) {
		for (auto [v, u] : {pii{r[i][0], r[i][1]}, pii{r[i][1], r[i][0]}}) {
			if ((cnt[v] == 1 || deg[v] == 1) && cnt[u] == 0) // F F
				add_edge(v, u);
			if ((cnt[v] == 1 || deg[v] == 1) && cnt[u] != 0) // F nF
				add_edge(v, u+N);
			if (cnt[v] == 0 && cnt[u] == 0) // nF F
				add_edge(v+N, u);
			if (cnt[v] == 0 && cnt[u] != 0) // nF nF
				add_edge(v+N, u+N);
		}
		cnt[r[i][0]]++;
		cnt[r[i][1]]++;
	}
	::q = q;
	Loop (i,0,q) ::g[i] = g[i];
	solve(p);
	solve(p+N);
	Loop (i,0,q)
		answer(ans[i]);
}

#ifdef DARD
int main()
{
//	int constexpr n = 6;
//	int constexpr m = 6;
//	int constexpr p = 0;
//	int constexpr q = 1;
//	int g[q] = {3};
//	int r[m][2] = {{1,2}, {0,1}, {0,3}, {3,4}, {4,5}, {1,5}};
	int constexpr n = 5;
	int constexpr m = 5;
	int constexpr p = 2;
	int constexpr q = 2;
	int g[q] = {3, 1};
	int r[m][2] = {{1,0}, {1,2}, {3,2}, {1,3}, {4,2}};
	count_routes(n, m, p, r, q, g);
	cout << '\n';
}
#endif

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15060 KB Output is correct
2 Correct 8 ms 15080 KB Output is correct
3 Correct 10 ms 15140 KB Output is correct
4 Correct 10 ms 17364 KB Output is correct
5 Correct 10 ms 17364 KB Output is correct
6 Correct 9 ms 15180 KB Output is correct
7 Correct 9 ms 14932 KB Output is correct
8 Correct 9 ms 15080 KB Output is correct
9 Correct 9 ms 15060 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15060 KB Output is correct
2 Correct 8 ms 15080 KB Output is correct
3 Correct 10 ms 15140 KB Output is correct
4 Correct 10 ms 17364 KB Output is correct
5 Correct 10 ms 17364 KB Output is correct
6 Correct 9 ms 15180 KB Output is correct
7 Correct 9 ms 14932 KB Output is correct
8 Correct 9 ms 15080 KB Output is correct
9 Correct 9 ms 15060 KB Output is correct
10 Correct 7 ms 14932 KB Output is correct
11 Correct 15 ms 16564 KB Output is correct
12 Correct 24 ms 17384 KB Output is correct
13 Correct 56 ms 37020 KB Output is correct
14 Correct 65 ms 22956 KB Output is correct
15 Correct 78 ms 23600 KB Output is correct
16 Correct 68 ms 21644 KB Output is correct
17 Runtime error 79 ms 45708 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15060 KB Output is correct
2 Correct 8 ms 15080 KB Output is correct
3 Correct 10 ms 15140 KB Output is correct
4 Correct 10 ms 17364 KB Output is correct
5 Correct 10 ms 17364 KB Output is correct
6 Correct 9 ms 15180 KB Output is correct
7 Correct 9 ms 14932 KB Output is correct
8 Correct 9 ms 15080 KB Output is correct
9 Correct 9 ms 15060 KB Output is correct
10 Correct 7 ms 14932 KB Output is correct
11 Correct 15 ms 16564 KB Output is correct
12 Correct 24 ms 17384 KB Output is correct
13 Correct 56 ms 37020 KB Output is correct
14 Correct 65 ms 22956 KB Output is correct
15 Correct 78 ms 23600 KB Output is correct
16 Correct 68 ms 21644 KB Output is correct
17 Runtime error 79 ms 45708 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -