oj.uz

Submission #544916

# Submission time Handle Problem Language Result Execution time Memory
544916 2022-04-03T06:51:21 Z mgl_diamond Palembang Bridges (APIO15_bridge) C++14
100 / 100
 171 ms 5684 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ii pair<int, int>
#define fi first
#define se second
#define debug(x) cout << #x << ": " << x << "\n"
#define all(x) x.begin(), x.end()

template<class T> bool umax(T &a, T b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool umin(T &a, T b) { if (a>b) { a=b; return 1; } return 0; }

void setIO(string name) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	freopen((name+".inp").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}

bool cmp(ii &a, ii &b) { return a.fi+a.se<b.fi+b.se; }

struct med {
	ll lef, rig;
	priority_queue<int, vector<int>, greater<int>> rb;
	priority_queue<int> lb;

	void reset() {
		while (lb.size()) lb.pop();
		while (rb.size()) rb.pop();
		lef=rig=0;
	}
	void insert(int x) {
		if (lb.empty()) {
			lb.push(x);
			lef+=x;
			return;
		}

		if (x<=lb.top()) lef+=x, lb.push(x);
		else rig+=x, rb.push(x);

		if (lb.size()-1>rb.size()) {
			lef-=lb.top();
			rig+=lb.top();
			rb.push(lb.top());
			lb.pop();
		} else if (lb.size()<rb.size()) {
			lef+=rb.top();
			rig-=rb.top();
			lb.push(rb.top());
			rb.pop();
		}
	}
	ll get() {
		return rig-lef; 
	}
} med;

const int mxN=100100;
int n, k, N;
ll same_side, ans, pref[mxN];
vector<ii> v;

int main() {
	cin >> k >> n;
	for(int i=1; i<=n; ++i) {
		char c, d; int x, y;
		cin >> c >> x >> d >> y;
		if (c==d) same_side+=abs(x-y);
		else v.push_back({x, y});
	}

	N=v.size();
	sort(all(v), cmp);

	med.reset();
	for(int i=1; i<=N; ++i) {
		med.insert(v[i-1].fi);
		med.insert(v[i-1].se);
		pref[i]=med.get();
	}

	ans=pref[N];
	if (k==2) {
		med.reset();
		for(int i=N; i>=1; --i) {
			med.insert(v[i-1].fi);
			med.insert(v[i-1].se);
			umin(ans, pref[i-1]+med.get());
		}
	}

	cout << same_side+N+ans;
}

Compilation message

bridge.cpp: In function 'void setIO(std::string)':
bridge.cpp:16:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  freopen((name+".inp").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:17:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 212 KB Output is correct
3 Correct 2 ms 312 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 2 ms 320 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 2 ms 320 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 2 ms 324 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 57 ms 4176 KB Output is correct
13 Correct 120 ms 5516 KB Output is correct
14 Correct 78 ms 4280 KB Output is correct
15 Correct 68 ms 3492 KB Output is correct
16 Correct 85 ms 4788 KB Output is correct
17 Correct 125 ms 5388 KB Output is correct
18 Correct 95 ms 4984 KB Output is correct
19 Correct 113 ms 5436 KB Output is correct
20 Correct 89 ms 5352 KB Output is correct
21 Correct 137 ms 5116 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 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 312 KB Output is correct
8 Correct 1 ms 316 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

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 312 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 308 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 340 KB Output is correct
12 Correct 1 ms 304 KB Output is correct
13 Correct 1 ms 340 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 312 KB Output is correct
17 Correct 1 ms 316 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 324 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 324 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 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 312 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 308 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 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 61 ms 3780 KB Output is correct
26 Correct 104 ms 4328 KB Output is correct
27 Correct 171 ms 4996 KB Output is correct
28 Correct 154 ms 5684 KB Output is correct
29 Correct 160 ms 5368 KB Output is correct
30 Correct 82 ms 3012 KB Output is correct
31 Correct 125 ms 4676 KB Output is correct
32 Correct 131 ms 5396 KB Output is correct
33 Correct 120 ms 5376 KB Output is correct
34 Correct 140 ms 5400 KB Output is correct
35 Correct 101 ms 5376 KB Output is correct
36 Correct 166 ms 5080 KB Output is correct
37 Correct 57 ms 3828 KB Output is correct