Submission #1115096

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115096		thieunguyenhuy	Island Hopping (JOI24_island)	C++17	2 / 100	15 ms	812 KiB

island

#ifndef hwe
	#include "island.h"
#endif

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

#define popcount(n) (__builtin_popcountll((n)))
#define clz(n) (__builtin_clzll((n)))
#define ctz(n) (__builtin_ctzll((n)))
#define lg(n) (63 - __builtin_clzll((n)))
#define BIT(n, i) (((n) >> (i)) & 1ll)
#define MASK(i) (1ll << (i))
#define FLIP(n, i) ((n) ^ (1ll << (i)))
#define ON(n, i) ((n) | MASK(i))
#define OFF(n, i) ((n) & ~MASK(i))

#define Int __int128
#define fi first
#define se second

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long long, int> pli;
typedef pair<int, long long> pil;
typedef vector<pair<int, int>> vii;
typedef vector<pair<long long, long long>> vll;
typedef vector<pair<long long, int>> vli;
typedef vector<pair<int, long long>> vil;

template <class T1, class T2>
bool maximize(T1 &x, T2 y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <class T1, class T2>
bool minimize(T1 &x, T2 y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}

template <class T>
void remove_duplicate(vector<T> &ve) {
    sort (ve.begin(), ve.end());
    ve.resize(unique(ve.begin(), ve.end()) - ve.begin());
}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
template <class T> T random(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
template <class T> T random(T r) {
    return rng() % r;
}

const int N = 300 + 5;
const int MOD = 1e9 + 7;
const int inf = 1e9;
const long long INF = 1e18;

int mem[N][N];
int deg[N];
bitset<N> mark, worked;

#ifdef hwe
int query(int v, int k) {
	cerr << "QUERY = " << v << ' ' << k << '\n';
	int ret; cin >> ret; return ret;
}

void answer(int u, int v) {
	cerr << "ANSWER = " << u << ' ' << v << '\n';
}
#endif

int ask(int v, int k) {
	if (mem[v][k] != -1) return mem[v][k];
	return mem[v][k] = query(v, k);
}

void solve(int n, int L) {
	memset(mem, -1, sizeof mem); memset(deg, 0, sizeof deg);
	vii edges; mark.reset(), worked.reset();
	for (int pivot = 1; pivot <= n; ++pivot) {
		mark[pivot] = true;
		for (int k = deg[pivot] + 1; k < n; ++k) {
			int v = ask(pivot, k);
			if (v < pivot) break;
			if (ask(v, deg[v] + 1) == pivot) {
				edges.emplace_back(pivot, v);
				++deg[pivot], ++deg[v];
			}
			else break;
		}
	}

	for (auto it : edges) answer(it.fi, it.se);
}


#ifdef hwe
signed main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

    int n; cin >> n;

    solve(n, 69);

    cerr << '\n'; return 0;
}
#endif

• Subtask 1: 2 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 7
• Subtask 4: 0 / 9
• Subtask 5: 0 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 22
• Subtask 8: 0 / 28