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Submission #49946

# Submission time Handle Problem Language Result Execution time Memory
49946 2018-06-05T04:28:17 Z tmwilliamlin168 Palembang Bridges (APIO15_bridge) C++14
100 / 100
 94 ms 3904 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pii pair<int, int>
#define fi first
#define se second

const int mxN=1e5;
int k, n, med;
ll ba, a1[mxN+1], a2, bs, ts;
vector<pii> ps;
priority_queue<int> bpq;
priority_queue<int, vector<int>, greater<int>> tpq;

inline void upd(int x) {
	if(x<med)
		bpq.push(x), bs+=x;
	else
		tpq.push(x), ts+=x;
	if(bpq.size()+2<=tpq.size()) {
		bpq.push(med), bs+=med;
		med=tpq.top(), tpq.pop(), ts-=med;
	} else if(bpq.size()>=tpq.size()+2) {
		tpq.push(med), ts+=med;
		med=bpq.top(), bpq.pop(), bs-=med;
	}
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> k >> n;
	for(int i=0; i<n; ++i) {
		char z1, z2;
		pii pi;
		cin >> z1 >> pi.fi >> z2 >> pi.se;
		if(z1!=z2) {
			ps.push_back(pi);
			++ba;
		} else
			ba+=abs(pi.fi-pi.se);
	}
	sort(ps.begin(), ps.end(), [](const pii &a, const pii &b) {
		return a.fi+a.se<b.fi+b.se;
	});
	for(int i=0; i<ps.size(); ++i) {
		upd(ps[i].fi), upd(ps[i].se);
		a1[i+1]=ts-(ll)tpq.size()*med+((ll)bpq.size()-1)*med-bs;
	}
	a2=a1[ps.size()];
	if(k==2) {
		bpq=priority_queue<int>(), tpq=priority_queue<int, vector<int>, greater<int>>();
		med=bs=ts=0;
		for(int i=ps.size()-1; i>0; --i) {
			upd(ps[i].fi), upd(ps[i].se);
			a2=min(a1[i]+ts-(ll)tpq.size()*med+((ll)bpq.size()-1)*med-bs, a2);
		}
	}
	cout << ba+a2;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:48:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<ps.size(); ++i) {
               ~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 248 KB Output is correct
2 Correct 3 ms 484 KB Output is correct
3 Correct 2 ms 564 KB Output is correct
4 Correct 3 ms 564 KB Output is correct
5 Correct 3 ms 564 KB Output is correct
6 Correct 2 ms 564 KB Output is correct
7 Correct 2 ms 564 KB Output is correct
8 Correct 4 ms 564 KB Output is correct
9 Correct 3 ms 668 KB Output is correct
10 Correct 2 ms 668 KB Output is correct
11 Correct 4 ms 668 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 668 KB Output is correct
2 Correct 2 ms 668 KB Output is correct
3 Correct 2 ms 668 KB Output is correct
4 Correct 3 ms 668 KB Output is correct
5 Correct 3 ms 668 KB Output is correct
6 Correct 4 ms 668 KB Output is correct
7 Correct 2 ms 668 KB Output is correct
8 Correct 2 ms 668 KB Output is correct
9 Correct 3 ms 668 KB Output is correct
10 Correct 3 ms 668 KB Output is correct
11 Correct 3 ms 668 KB Output is correct
12 Correct 54 ms 3444 KB Output is correct
13 Correct 94 ms 3700 KB Output is correct
14 Correct 47 ms 3700 KB Output is correct
15 Correct 34 ms 3700 KB Output is correct
16 Correct 38 ms 3700 KB Output is correct
17 Correct 56 ms 3700 KB Output is correct
18 Correct 69 ms 3700 KB Output is correct
19 Correct 73 ms 3700 KB Output is correct
20 Correct 50 ms 3700 KB Output is correct
21 Correct 63 ms 3700 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3700 KB Output is correct
2 Correct 3 ms 3700 KB Output is correct
3 Correct 2 ms 3700 KB Output is correct
4 Correct 2 ms 3700 KB Output is correct
5 Correct 2 ms 3700 KB Output is correct
6 Correct 2 ms 3700 KB Output is correct
7 Correct 2 ms 3700 KB Output is correct
8 Correct 2 ms 3700 KB Output is correct
9 Correct 2 ms 3700 KB Output is correct
10 Correct 2 ms 3700 KB Output is correct
11 Correct 2 ms 3700 KB Output is correct
12 Correct 2 ms 3700 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3700 KB Output is correct
2 Correct 2 ms 3700 KB Output is correct
3 Correct 2 ms 3700 KB Output is correct
4 Correct 2 ms 3700 KB Output is correct
5 Correct 3 ms 3700 KB Output is correct
6 Correct 2 ms 3700 KB Output is correct
7 Correct 2 ms 3700 KB Output is correct
8 Correct 2 ms 3700 KB Output is correct
9 Correct 2 ms 3700 KB Output is correct
10 Correct 2 ms 3700 KB Output is correct
11 Correct 2 ms 3700 KB Output is correct
12 Correct 2 ms 3700 KB Output is correct
13 Correct 2 ms 3700 KB Output is correct
14 Correct 3 ms 3700 KB Output is correct
15 Correct 3 ms 3700 KB Output is correct
16 Correct 2 ms 3700 KB Output is correct
17 Correct 2 ms 3700 KB Output is correct
18 Correct 2 ms 3700 KB Output is correct
19 Correct 2 ms 3700 KB Output is correct
20 Correct 2 ms 3700 KB Output is correct
21 Correct 2 ms 3700 KB Output is correct
22 Correct 3 ms 3700 KB Output is correct
23 Correct 2 ms 3700 KB Output is correct
24 Correct 4 ms 3700 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3700 KB Output is correct
2 Correct 2 ms 3700 KB Output is correct
3 Correct 2 ms 3700 KB Output is correct
4 Correct 3 ms 3700 KB Output is correct
5 Correct 2 ms 3700 KB Output is correct
6 Correct 2 ms 3700 KB Output is correct
7 Correct 2 ms 3700 KB Output is correct
8 Correct 2 ms 3700 KB Output is correct
9 Correct 2 ms 3700 KB Output is correct
10 Correct 2 ms 3700 KB Output is correct
11 Correct 2 ms 3700 KB Output is correct
12 Correct 2 ms 3700 KB Output is correct
13 Correct 3 ms 3700 KB Output is correct
14 Correct 2 ms 3700 KB Output is correct
15 Correct 3 ms 3700 KB Output is correct
16 Correct 2 ms 3700 KB Output is correct
17 Correct 3 ms 3700 KB Output is correct
18 Correct 3 ms 3700 KB Output is correct
19 Correct 3 ms 3700 KB Output is correct
20 Correct 2 ms 3700 KB Output is correct
21 Correct 3 ms 3700 KB Output is correct
22 Correct 3 ms 3700 KB Output is correct
23 Correct 3 ms 3700 KB Output is correct
24 Correct 2 ms 3700 KB Output is correct
25 Correct 37 ms 3752 KB Output is correct
26 Correct 51 ms 3752 KB Output is correct
27 Correct 64 ms 3752 KB Output is correct
28 Correct 85 ms 3904 KB Output is correct
29 Correct 80 ms 3904 KB Output is correct
30 Correct 36 ms 3904 KB Output is correct
31 Correct 48 ms 3904 KB Output is correct
32 Correct 61 ms 3904 KB Output is correct
33 Correct 43 ms 3904 KB Output is correct
34 Correct 77 ms 3904 KB Output is correct
35 Correct 55 ms 3904 KB Output is correct
36 Correct 81 ms 3904 KB Output is correct
37 Correct 35 ms 3904 KB Output is correct