oj.uz

답안 #28884

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
28884 2017-07-17T12:02:08 Z cdemirer 운세 보기 2 (JOI14_fortune_telling2) C++14
35 / 100
 2000 ms 99384 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<vector<int> > vvi;
typedef vector<pair<int, int> > vii;
typedef vector<vector<pair<int, int> > > vvii;
#define pb(x) push_back(x)
#define mp(x, y) make_pair(x, y)

int twopow[22] = {0};
// x is always 2
int mypow(int x, int e) {
	if (twopow[e]) return twopow[e];
	if (e == 0) return 1;
	int a = mypow(x, e/2);
	return (twopow[e] = (e % 2 == 0) ? a*a : a*a*x);
}

int N, K;
vii cisimler;
map<int, int> tbl;
map<int, int> revtbl;
int queries[200002];
vii qs;
int rmqtbl[200002][19];
int rminqtbl[200002][19];
vii tickets;
bool kucuk[200002];

int rmq(int a, int b) {
	//cerr << "max of: ";
	//for (int i = a; i <= b; i++) {
		//cerr << rmqtbl[i][0] << " ";
	//}
	int pop = b - a + 1;
	int e = (int)log2(pop);
	int a2 = b - mypow(2, e) + 1;
	return max(rmqtbl[a][e], rmqtbl[a2][e]);
}
int rminq(int a, int b) {
	int pop = b - a + 1;
	int e = (int)log2(pop);
	int a2 = b - mypow(2, e) + 1;
	return min(rminqtbl[a][e], rminqtbl[a2][e]);
}
int binsrc(int x) {
	int l = 0, r = K;
	while (r > l) {
		int mid = (l + r) / 2;
		if (qs[mid].first >= x) r = mid;
		else l = mid+1;
	}
	return l;
}

int bit[524289] = {0};
void bitinc(int x) {
	x += 2;
	while (x <= 524288) {
		bit[x]++;
		x += x & -x;
	}
}
int bitget(int x) {
	x += 2;
	int sum = 0;
	while (x > 0) {
		sum += bit[x];
		x -= x & -x;
	}
	return sum;
}

int main(int argc, char **argv) {

	//freopen("input", "r", stdin);
	//freopen("output", "w", stdout);

	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> N >> K;
	set<int> S;
	for (int i = 0; i < N; i++) {
		int a, b; cin >> a >> b;
		cisimler.pb(mp(a, b));
		S.insert(a);
		S.insert(b);
	}
	for (int i = 0; i < K; i++) {
		int a; cin >> a;
		queries[i] = a;
		qs.pb(mp(a, i));
		S.insert(a);
	}
	int c = 0;
	while ( ! S.empty() ) {
		int x = *S.begin();
		S.erase(S.begin());
		tbl[x] = c;
		revtbl[c] = x;
		c++;
	}
	for (int i = 0; i < N; i++) {
		cisimler[i].first = tbl[cisimler[i].first];
		cisimler[i].second = tbl[cisimler[i].second];
		//cerr << i << " " << revtbl[cisimler[i].first] << " " << revtbl[cisimler[i].second] << "\n";
	}
	for (int i = 0; i < K; i++) {
		queries[i] = tbl[queries[i]];
		qs[i].first = tbl[qs[i].first];
	}
	sort(qs.begin(), qs.end());
	for (int i = 0; i < K; i++) {
		rmqtbl[i][0] = qs[i].second;
		rminqtbl[i][0] = qs[i].second;
	}
	for (int e = 1; e < 18; e++) {
		int off = mypow(2, e-1);
		for (int i = 0; i < K; i++) {
			if (i+2*off > K) continue;
			rmqtbl[i][e] = max(rmqtbl[i][e-1], rmqtbl[i+off][e-1]);
			rminqtbl[i][e] = min(rminqtbl[i][e-1], rminqtbl[i+off][e-1]);
		}
	}
	for (int i = 0; i < N; i++) {
		int cmin = min(cisimler[i].first, cisimler[i].second);
		int cmax = max(cisimler[i].first, cisimler[i].second);
		int ls = binsrc(cmin);
		//cerr << cmin << endl;
		int hs = binsrc(cmax);
		if (ls == K) {
			kucuk[i] = (cmin == cisimler[i].first);
			continue;
		} 
		if (hs == K) {
			kucuk[i] = false;
			continue;
		}
		//cerr << "ls : " << ls << " hs : " << hs << endl;
		if (ls != hs) {
			int q = rmq(ls, hs-1);
			//cerr << " is " << q << endl;
			tickets.pb(mp(q+1, i));
		}
	 	else {
			int q = rminq(ls, K-1);
			//cerr << ls << " " << q << endl;
			if (cmin == cisimler[i].first) {
				tickets.pb(mp(q+1, i));
			}
			else {
				tickets.pb(mp(q, i));
			}
		}
	}
	/*for (int i = 0; i < tickets.size(); i++) {
		cerr << tickets[i].first << " " << tickets[i].second << endl;
	}*/
	int cur = K;
	sort(tickets.begin(), tickets.end());
	for (int i = tickets.size()-1; i >= 0; i--) {
		int x = tickets[i].second;
		while (cur > tickets[i].first) {
			cur--;
			bitinc(queries[cur]);
		}
		int lim = max(cisimler[x].first, cisimler[x].second);
		int a = bitget(500000) - bitget(lim-1);
		//if (x == 3) cerr << lim << "\n";
		kucuk[x] = (a % 2 == 1);
	}
	ll sum = 0;
	for (int i = 0; i < N; i++) {
		//cerr << kucuk[i] << endl;
		if (kucuk[i]) {
			sum += revtbl[ min(cisimler[i].first, cisimler[i].second) ];
		}
		else {
			sum += revtbl[ max(cisimler[i].first, cisimler[i].second) ];
		}
	}
	cout << sum << endl;

	return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 35044 KB Output is correct
2 Correct 0 ms 35044 KB Output is correct
3 Correct 3 ms 35176 KB Output is correct
4 Correct 3 ms 35176 KB Output is correct
5 Correct 0 ms 35176 KB Output is correct
6 Correct 3 ms 35176 KB Output is correct
7 Correct 3 ms 35176 KB Output is correct
8 Correct 3 ms 35176 KB Output is correct
9 Correct 0 ms 35176 KB Output is correct
10 Correct 0 ms 35044 KB Output is correct
11 Correct 0 ms 35044 KB Output is correct
12 Correct 0 ms 35044 KB Output is correct
13 Correct 0 ms 35044 KB Output is correct

Subtask #2
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 38148 KB Output is correct
2 Correct 133 ms 41476 KB Output is correct
3 Correct 226 ms 44288 KB Output is correct
4 Correct 359 ms 48256 KB Output is correct
5 Correct 316 ms 48256 KB Output is correct
6 Correct 343 ms 48256 KB Output is correct
7 Correct 363 ms 48256 KB Output is correct
8 Correct 293 ms 48252 KB Output is correct
9 Correct 186 ms 44504 KB Output is correct
10 Correct 139 ms 42628 KB Output is correct
11 Correct 129 ms 41224 KB Output is correct
12 Correct 183 ms 45576 KB Output is correct
13 Correct 163 ms 43880 KB Output is correct
14 Correct 203 ms 44512 KB Output is correct
15 Correct 189 ms 44504 KB Output is correct
16 Correct 259 ms 46376 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 646 ms 57880 KB Output is correct
2 Correct 1166 ms 66656 KB Output is correct
3 Correct 1186 ms 77564 KB Output is correct
4 Execution timed out 2000 ms 99384 KB Execution timed out
5 Halted 0 ms 0 KB -