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Submission #561981

# Submission time Handle Problem Language Result Execution time Memory
561981 2022-05-14T02:54:11 Z maximath_1 Palembang Bridges (APIO15_bridge) C++11
100 / 100
 95 ms 6936 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
int k, n;
vector<pair<int, int> > p;
ll ans = 0ll;

ll solvek1(){
	if(p.empty()) return 0ll;

	ll res = 0ll;
	vector<int> cr;
	for(int i = 0; i < p.size(); i ++){
		cr.push_back(p[i].first);
		cr.push_back(p[i].second);
		res -= (ll)(p[i].first + p[i].second);
	}

	sort(cr.begin(), cr.end());
	for(int i = 2 * (int)p.size() - 1; i >= (int)p.size(); i --)
		res += 2ll * cr[i];

	return res + (int)p.size();
}

bool cmp(pair<int, int> a, pair<int, int> b){
	return a.first + a.second < b.first + b.second;
}

vector<ll> comp(){
	priority_queue<int> mx;
	priority_queue<int, vector<int>, greater<int> > mn;
	ll sum_mx = (ll)p[0].first, sum_mn = (ll)p[0].second;

	mx.push((int)sum_mx); mn.push((int)sum_mn);
	vector<ll> tmp; tmp.push_back(sum_mn - sum_mx);

	for(int i = 1; i < p.size(); i ++){
		int mxt = mx.top(), mnt = mn.top();
		int lf = p[i].first, rg = p[i].second;
		if(lf <= mxt && rg <= mxt){
			mx.pop();
			mx.push(lf); mx.push(rg);
			mn.push(mxt);
			sum_mx += lf + rg - mxt;
			sum_mn += mxt;
		}else if(lf >= mnt && rg >= mnt){
			mn.pop();
			mn.push(lf); mn.push(rg);
			mx.push(mnt);
			sum_mn += lf + rg - mnt;
			sum_mx += mnt;
		}else{
			mx.push(lf); mn.push(rg);
			sum_mx += lf; sum_mn += rg;
		}
		tmp.push_back(sum_mn - sum_mx);
	}
	
	return tmp;
}

ll solvek2(){
	if(p.empty()) return 0ll;

	sort(p.begin(), p.end(), cmp);
	vector<ll> asc = comp();
	reverse(p.begin(), p.end());
	vector<ll> dec = comp();

	ll res = 1e18;
	for(int i = 0; i < (int)p.size() - 1; i ++)
		res = min(res, asc[i] + dec[(int)p.size() - i - 2]);
	return min(res + (ll)p.size(), solvek1());
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	cin >> k >> n;
	for(int i = 0; i < n; i ++){
		string tp1, tp2; int p1, p2;
		cin >> tp1 >> p1 >> tp2 >> p2;
		if(tp1 == tp2)
			ans += (ll)abs(p1 - p2);
		else
			p.push_back({min(p1, p2), max(p1, p2)});
	}

	cout << ans + (k == 1 ? solvek1() : solvek2()) << endl;
	return 0;
}

Compilation message

bridge.cpp: In function 'long long int solvek1()':
bridge.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = 0; i < p.size(); i ++){
      |                 ~~^~~~~~~~~~
bridge.cpp: In function 'std::vector<long long int> comp()':
bridge.cpp:39:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for(int i = 1; i < p.size(); i ++){
      |                 ~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 37 ms 3400 KB Output is correct
13 Correct 52 ms 4860 KB Output is correct
14 Correct 37 ms 3656 KB Output is correct
15 Correct 31 ms 2844 KB Output is correct
16 Correct 51 ms 4312 KB Output is correct
17 Correct 56 ms 4856 KB Output is correct
18 Correct 44 ms 4544 KB Output is correct
19 Correct 48 ms 4868 KB Output is correct
20 Correct 36 ms 4460 KB Output is correct
21 Correct 54 ms 4684 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 57 ms 5444 KB Output is correct
26 Correct 60 ms 5504 KB Output is correct
27 Correct 81 ms 6244 KB Output is correct
28 Correct 95 ms 6896 KB Output is correct
29 Correct 94 ms 6936 KB Output is correct
30 Correct 49 ms 3700 KB Output is correct
31 Correct 51 ms 6200 KB Output is correct
32 Correct 78 ms 6924 KB Output is correct
33 Correct 64 ms 6500 KB Output is correct
34 Correct 85 ms 6872 KB Output is correct
35 Correct 55 ms 6484 KB Output is correct
36 Correct 72 ms 6592 KB Output is correct
37 Correct 40 ms 5424 KB Output is correct