Submission #943117

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
943117	2024-03-11T08:24:55 Z	oblantis	Palembang Bridges (APIO15_bridge)	C++17	100 / 100	161 ms	14440 KB

bridge

//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
//#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define pb push_back
#define ss second
#define ff first
#define vt vector
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const ll inf = 1e18;
const int mod = 1e9+7;
const int maxn = 1e6 + 1;

bool cmp(pll x, pll y){
	return x.ff + x.ss < y.ff + y.ss;
}
void solve() {
	int k, n;
	cin >> k >> n;
	ll ans = 0, s = inf;
	vt<pair<ll, ll>> v;
	for(int i = 0; i < n; i++){
		char a, b;
		int x, y;
		cin >> a >> x >> b >> y;
		if(x > y)swap(x, y);
		if(a != b){
			v.pb({x, y});
			ans++;
		}
		else ans += y - x;
	}
	if(v.empty()){
		cout << ans;
		return;
	}
	sort(all(v), cmp);
	n = v.size();
	ll dp[n], wt = 0;
	multiset<ll> m1, m2;
	for(int i = 0; i < n; i++){
		m1.insert(v[i].ff), m2.insert(v[i].ss);
		wt += v[i].ss - v[i].ff;
		while(*m2.begin() < *m1.rbegin()){
			int x = *m1.rbegin(), y = *m2.begin();
			wt += (x - y) * 2;
			m2.erase(m2.begin()), m1.erase(--m1.end());
			m2.insert(x), m1.insert(y);
		}
		dp[i] = wt;
	}
	s = dp[n - 1];
	m1.clear(), m2.clear();
	wt = 0;
	for(int i = n - 1; k == 2 && i >= 0; i--){
		m1.insert(v[i].ff), m2.insert(v[i].ss);
		wt += v[i].ss - v[i].ff;
		while(*m2.begin() < *m1.rbegin()){
			int x = *m1.rbegin(), y = *m2.begin();
			wt += (x - y) * 2;
			m2.erase(m2.begin()), m1.erase(--m1.end());
			m2.insert(x), m1.insert(y);
		}
		if(i)s = min(s, dp[i - 1] + wt);		
	}
	cout << ans + s << '\n';
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int times = 1;
	//cin >> times;
	for(int i = 1; i <= times; i++) {
		solve();
	}
	return 0;
}

Subtask #1
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct

Subtask #2
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	484 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	51 ms	12952 KB	Output is correct
13	Correct	96 ms	14152 KB	Output is correct
14	Correct	78 ms	11924 KB	Output is correct
15	Correct	51 ms	8664 KB	Output is correct
16	Correct	50 ms	13644 KB	Output is correct
17	Correct	79 ms	14276 KB	Output is correct
18	Correct	44 ms	13964 KB	Output is correct
19	Correct	82 ms	14440 KB	Output is correct
20	Correct	67 ms	13768 KB	Output is correct
21	Correct	80 ms	14024 KB	Output is correct

Subtask #3
9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	344 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct

Subtask #4
32.0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	1 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	592 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	2 ms	344 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	468 KB	Output is correct

Subtask #5
37.0 / 37.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	512 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	81 ms	12804 KB	Output is correct
26	Correct	149 ms	12996 KB	Output is correct
27	Correct	157 ms	13000 KB	Output is correct
28	Correct	160 ms	13288 KB	Output is correct
29	Correct	161 ms	13380 KB	Output is correct
30	Correct	71 ms	7376 KB	Output is correct
31	Correct	78 ms	13004 KB	Output is correct
32	Correct	124 ms	13304 KB	Output is correct
33	Correct	74 ms	13172 KB	Output is correct
34	Correct	122 ms	13324 KB	Output is correct
35	Correct	117 ms	13000 KB	Output is correct
36	Correct	127 ms	13408 KB	Output is correct
37	Correct	71 ms	12484 KB	Output is correct

Submission #943117

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 14.0 / 14.0

Subtask #3 9.0 / 9.0

Subtask #4 32.0 / 32.0

Subtask #5 37.0 / 37.0

Subtask #1
8.0 / 8.0

Subtask #2
14.0 / 14.0

Subtask #3
9.0 / 9.0

Subtask #4
32.0 / 32.0

Subtask #5
37.0 / 37.0