Submission #125350

#	Time	Username	Problem	Language	Result	Execution time	Memory
125350		abacaba	Krave (COI14_krave)	C++14	100 / 100	854 ms	80464 KiB

krave

#include <bits/stdc++.h>
using namespace std;
 
#define max3(a, b, c) max(a, max(b, c))
#define min3(a, b, c) min(a, min(b, c))
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define ll long long
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define uset unordered_set
#define endl '\n'
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>

const int inf = 2e9;
const int N = 1e5 + 15;
int w, h, n, m, k;

set <int> t[2][N << 2];

void multiupdate(int v, int tl, int tr, int l, int r, int val, int isx) {
	if(tl > r || tr < l || l > r)
		return;
	if(tl >= l && tr <= r) {
		t[isx][v].insert(val);
		return;
	}
	int mid = tl + tr >> 1;
	multiupdate(v << 1, tl, mid, l, r, val, isx);
	multiupdate(v << 1 | 1, mid + 1, tr, l, r, val, isx);
}
 
pii get(int v, int tl, int tr, int pos, int x, int isx) {

	pii ans = mp(-inf, inf);

	set <int>::iterator it = t[isx][v].upper_bound(x);

	if(it != t[isx][v].end())
		ans.se = min(ans.se, *it);
	if(it != t[isx][v].begin())
		ans.f = max(ans.f, *(--it));

	if(tl == tr)
		return ans;

	int mid = tl + tr >> 1;
	if(pos <= mid) {
		pii s = get(v << 1, tl, mid, pos, x, isx);
		return mp(max(s.f, ans.f), min(s.se, ans.se));
	}
	pii s = get(v << 1 | 1, mid + 1, tr, pos, x, isx);
	return mp(max(s.f, ans.f), min(s.se, ans.se));
}

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> w >> h >> n;

	multiupdate(1, 1, h, 1, h, 0, 0);
	multiupdate(1, 1, h, 1, h, w, 0);
	multiupdate(1, 1, w, 1, w, 0, 1);
	multiupdate(1, 1, w, 1, w, h, 1);

	for(int i = 1; i <= n; ++i) {
		int x, y, d;
		cin >> x >> y >> d;
		if(d == 1) {
			pii x12 = get(1, 1, h, y, x, 0);
			pii y12 = get(1, 1, w, x, y, 1);
			ll area1 = (ll)abs(y - y12.f) * abs(x12.f - x12.se);
			ll area2 = (ll)abs(y - y12.se) * abs(x12.f - x12.se);
			if(area2 < area1)
				swap(area2, area1);
			cout << area1 << ' ' << area2 << endl;
			multiupdate(1, 1, w, x12.f, x12.se, y, 1);
		}
		else {
			pii x12 = get(1, 1, h, y, x, 0);
			pii y12 = get(1, 1, w, x, y, 1);
			ll area1 = (ll)abs(y12.se - y12.f) * abs(x - x12.se);
			ll area2 = (ll)abs(y12.se - y12.f) * abs(x12.f - x);
			if(area2 < area1)
				swap(area2, area1);
			cout << area1 << ' ' << area2 << endl;
			multiupdate(1, 1, h, y12.f, y12.se, x, 0);
		}
	}
	return 0;
}

Compilation message (stderr)

krave.cpp: In function 'void multiupdate(int, int, int, int, int, int, int)':
krave.cpp:34:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid = tl + tr >> 1;
            ~~~^~~~
krave.cpp: In function 'std::pair<int, int> get(int, int, int, int, int, int)':
krave.cpp:53:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid = tl + tr >> 1;
            ~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 12 / 12
• Subtask 7: 12 / 12
• Subtask 8: 12 / 12
• Subtask 9: 12 / 12
• Subtask 10: 12 / 12