Submission #633395

#TimeUsernameProblemLanguageResultExecution timeMemory
633395shmad코알라 (APIO17_koala)C++17
47 / 100
43 ms460 KiB
#include "koala.h"
#include <bits/stdc++.h>

#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvt = vt< vt<int> >;

int a[100], b[100];

int minValue(int n, int w) {  
    fill(a, a + n, 0);
    a[0] = 1;
    playRound(a, b);
    for (int i = 1; i < n; i++) if (b[i] == 0) return i;
    return 0;
}

int maxValue (int n, int w) {
	vt<int> p(n);
	iota(all(p), 0ll);
	while (sz(p) != 1) {
		fill(a, a + n, 0);
		int x = n / sz(p);
		for (int i: p) a[i] = x;
		playRound(a, b);
		vt<int> np;
		for (int i = 0; i < n; i++) {
			if (b[i] == x + 1) np.pb(i);
		}
		p = np;
	}
    return p[0];
}

int greaterValue (int n, int w) {
	fill(a, a + n, 0);
	int l = 1, r = 13, ans = 0;
	while (l <= r) {
		int mid = l + r >> 1;
		fill(a, a + n, 0);
		a[0] = a[1] = mid;
		playRound(a, b);
		if (b[0] != b[1]) return (b[0] < b[1]);
		if (b[0] > mid && b[1] > mid) ans = mid, l = mid + 1;
		else r = mid - 1;
	}
	a[0] = a[1] = ans;
	playRound(a, b);
	return (b[0] < b[1]);
}

bool check (int i, int j, int n, int w) {
	fill(a, a + n, 0);
	a[i] = a[j] = w / 2;
	playRound(a, b);
	return (b[j] > w / 2);
}

vt<int> merge_sort (vt<int> &a, int n, int w) {
	if (sz(a) == 1) return a;
	vt<int> l, r;
	for (int i = 0; i < sz(a); i++) {
		if (i < sz(a) / 2) l.pb(a[i]);
		else r.pb(a[i]);
	}
	l = merge_sort(l, n, w);
	r = merge_sort(r, n, w);
	a.clear();
	int i = 0, j = 0;
	while (i < sz(l) && j < sz(r)) a.pb((check(l[i], r[j], n, w) ? l[i++] : r[j++]));
	while (i < sz(l)) a.pb(l[i++]);
	while (j < sz(r)) a.pb(r[j++]);
	return a;
}

void allValues (int n, int w, int *p) {
    if (w == n * 2) {
   		vt<int> v(n);
   		iota(all(v), 0ll);
   		v = merge_sort(v, n, w);
   		for (int i = 0; i < n; i++) p[v[i]] = i + 1;
   		return; 	
    }

}

Compilation message (stderr)

koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:49:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |   int mid = l + r >> 1;
      |             ~~^~~
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