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답안 #279763

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
279763 2020-08-22T10:52:27 Z srvlt Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 30196 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define all(x) begin(x), end(x)
#define SZ(x) (int)(x).size()
#define cps(x) sort(all(x)), (x).erase(unique(all(x)), end(x))
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int n0 = 1e5 + 123, m0 = 4e5 + 123;
int n, k, m, l[n0], r[n0], l0[n0], r0[n0];
ll ans, pref[n0], suf[n0];
vector <int> mr[m0], ml[m0];

int M;
ll q[2][m0], val[2][m0], Q[2], VAL[2];
void upd(int c, int x, ll y) {
	Q[c]++, VAL[c] += y;
	for (; x < M; x |= (x + 1)) {
		val[c][x] += y;
		q[c][x]++;
	}
}

ll getsum(int c, int x) {
	ll res = 0;
	for (; x >= 0; x = (x & (x + 1)) - 1)
		res += val[c][x];
	return res;
}

ll getnum(int c, int x) {
	ll res = 0;
	for (; x >= 0; x = (x & (x + 1)) - 1)
		res += q[c][x];
	return res;
}

void clean() {
	Q[0] = Q[1] = VAL[0] = VAL[1] = 0;
	for (int i = 0; i < M; i++)
		val[0][i] = val[1][i] = q[0][i] = q[1][i] = 0;
}

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	cin >> k >> n;
	for (int i = 0; i < n; i++) {
		char c1, c2;
		int L, R;
		cin >> c1 >> L >> c2 >> R;
		if (L > R) swap(L, R);
		ans += R - L;
		if (c1 != c2) {
			l[m] = L, r[m] = R;
			m++;
		}
	}
	vector <int> v;
	for (int i = 0; i < m; i++)
		v.pb(l[i]), v.pb(r[i]);
	sort(all(v));
	ll ans2 = ans;
	int j = SZ(v) / 2;
	for (int i = 0; i < m; i++) {
		if (v[j] < l[i]) ans2 += 2 * (l[i] - v[j]);
		if (r[i] < v[j]) ans2 += 2 * (v[j] - r[i]);
	}
	if (k == 1) return cout << ans2 + m, 0;
	v.erase(unique(all(v)), end(v));
	vector <int> vec;
	for (int i = 0; i < m; i++) {
		l0[i] = lower_bound(all(v), l[i]) - v.begin();
		r0[i] = lower_bound(all(v), r[i]) - v.begin();
		vec.pb(l[i] + r[i]);
		ml[l0[i]].pb(i), mr[r0[i]].pb(i);
	}
	cps(vec);
	ll num = 0, cur = 0;
	for (int i = 0; i < SZ(v); i++) {
		if (i)
			cur += (v[i] - v[i - 1]) * num;
		pref[i] = cur;
		num += SZ(mr[i]);
	}
	num = 0, cur = 0;
	for (int i = SZ(v) - 1; i >= 0; i--) {
		if (i < SZ(v) - 1)
			cur += (v[i + 1] - v[i]) * num;
		suf[i] = cur;
		num += SZ(ml[i]);
	}
	ll can = 1e18;
	M = SZ(vec);
	
	vector <array <int, 2>> seg;
	for (int i = 0; i < SZ(v); i++) {
		//clean();
		seg.clear();
		for (int j = i + 1; j < SZ(v); j++) {
			for (int k : mr[j]) {
				int L = l[k], R = r[k];
				if (L < v[i]) continue;
				//int pos = lower_bound(all(vec), L + R) - vec.begin();
				//upd(0, pos, L);
				//upd(1, pos, R);
				seg.pb({L, R});
			}
			//int pos2 = upper_bound(all(vec), v[i] + v[j]) - vec.begin() - 1;
			//ll tmp = getsum(0, pos2) - getnum(0, pos2) * v[i];
			//ll tmp2 = getnum(1, pos2) * v[j] - getsum(1, pos2);
			//tmp2 = (Q[1] * v[j] - VAL[1]) - tmp2;
			//can = min(can, pref[i] + suf[j] + tmp + tmp2);
			ll tmp = 0;
			for (auto k : seg)
				tmp += min(k[0] - v[i], v[j] - k[1]);
			can = min(can, pref[i] + suf[j] + tmp);
		}
	}
	ans += can * 2;
	cout << min(ans, ans2) + m;
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 19200 KB Output is correct
2 Correct 12 ms 19200 KB Output is correct
3 Correct 15 ms 19200 KB Output is correct
4 Correct 14 ms 19200 KB Output is correct
5 Correct 13 ms 19200 KB Output is correct
6 Correct 13 ms 19200 KB Output is correct
7 Correct 13 ms 19200 KB Output is correct
8 Correct 13 ms 19176 KB Output is correct
9 Correct 14 ms 19200 KB Output is correct
10 Correct 13 ms 19200 KB Output is correct
11 Correct 14 ms 19328 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 19200 KB Output is correct
2 Correct 12 ms 19200 KB Output is correct
3 Correct 13 ms 19200 KB Output is correct
4 Correct 14 ms 19200 KB Output is correct
5 Correct 12 ms 19200 KB Output is correct
6 Correct 14 ms 19200 KB Output is correct
7 Correct 13 ms 19200 KB Output is correct
8 Correct 13 ms 19200 KB Output is correct
9 Correct 14 ms 19200 KB Output is correct
10 Correct 13 ms 19200 KB Output is correct
11 Correct 14 ms 19200 KB Output is correct
12 Correct 34 ms 21116 KB Output is correct
13 Correct 58 ms 21108 KB Output is correct
14 Correct 45 ms 20988 KB Output is correct
15 Correct 39 ms 20216 KB Output is correct
16 Correct 49 ms 21108 KB Output is correct
17 Correct 44 ms 21108 KB Output is correct
18 Correct 51 ms 21108 KB Output is correct
19 Correct 57 ms 21108 KB Output is correct
20 Correct 45 ms 21108 KB Output is correct
21 Correct 53 ms 21108 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 19200 KB Output is correct
2 Correct 12 ms 19200 KB Output is correct
3 Correct 13 ms 19200 KB Output is correct
4 Correct 13 ms 19200 KB Output is correct
5 Correct 16 ms 19200 KB Output is correct
6 Correct 12 ms 19200 KB Output is correct
7 Correct 13 ms 19200 KB Output is correct
8 Correct 13 ms 19200 KB Output is correct
9 Correct 14 ms 19200 KB Output is correct
10 Correct 13 ms 19200 KB Output is correct
11 Correct 14 ms 19200 KB Output is correct
12 Correct 14 ms 19200 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19200 KB Output is correct
2 Correct 12 ms 19200 KB Output is correct
3 Correct 12 ms 19200 KB Output is correct
4 Correct 13 ms 19200 KB Output is correct
5 Correct 12 ms 19200 KB Output is correct
6 Correct 13 ms 19200 KB Output is correct
7 Correct 13 ms 19200 KB Output is correct
8 Correct 13 ms 19200 KB Output is correct
9 Correct 14 ms 19200 KB Output is correct
10 Correct 13 ms 19200 KB Output is correct
11 Correct 13 ms 19200 KB Output is correct
12 Correct 13 ms 19200 KB Output is correct
13 Correct 12 ms 19200 KB Output is correct
14 Correct 14 ms 19200 KB Output is correct
15 Correct 406 ms 19456 KB Output is correct
16 Correct 13 ms 19200 KB Output is correct
17 Correct 13 ms 19200 KB Output is correct
18 Correct 39 ms 19200 KB Output is correct
19 Correct 12 ms 19200 KB Output is correct
20 Correct 837 ms 19328 KB Output is correct
21 Correct 433 ms 19364 KB Output is correct
22 Correct 739 ms 19448 KB Output is correct
23 Correct 15 ms 19200 KB Output is correct
24 Correct 797 ms 19360 KB Output is correct

Subtask #5
0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 19200 KB Output is correct
2 Correct 12 ms 19200 KB Output is correct
3 Correct 12 ms 19200 KB Output is correct
4 Correct 14 ms 19200 KB Output is correct
5 Correct 12 ms 19200 KB Output is correct
6 Correct 13 ms 19200 KB Output is correct
7 Correct 12 ms 19200 KB Output is correct
8 Correct 14 ms 19200 KB Output is correct
9 Correct 13 ms 19212 KB Output is correct
10 Correct 14 ms 19200 KB Output is correct
11 Correct 13 ms 19200 KB Output is correct
12 Correct 14 ms 19200 KB Output is correct
13 Correct 13 ms 19200 KB Output is correct
14 Correct 15 ms 19200 KB Output is correct
15 Correct 406 ms 19356 KB Output is correct
16 Correct 13 ms 19200 KB Output is correct
17 Correct 14 ms 19200 KB Output is correct
18 Correct 36 ms 19200 KB Output is correct
19 Correct 13 ms 19200 KB Output is correct
20 Correct 798 ms 19448 KB Output is correct
21 Correct 403 ms 19448 KB Output is correct
22 Correct 728 ms 19328 KB Output is correct
23 Correct 13 ms 19200 KB Output is correct
24 Correct 822 ms 19356 KB Output is correct
25 Correct 42 ms 24944 KB Output is correct
26 Correct 205 ms 24560 KB Output is correct
27 Execution timed out 2053 ms 30196 KB Time limit exceeded
28 Halted 0 ms 0 KB -