oj.uz

Submission #764203

# Submission time Handle Problem Language Result Execution time Memory
764203 2023-06-23T08:33:42 Z qwerasdfzxcl Palembang Bridges (APIO15_bridge) C++17
100 / 100
 52 ms 4240 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define MAXN 100005
#define pb push_back
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
typedef long long lld;
 
int K, N, M;
lld D[MAXN], E[MAXN];
 
struct Z{
	int a, b;
} A[MAXN];
 
void proc(lld V[])
{
	if (!N) return;
	lld val = abs(A[1].a - A[1].b);
	priority_queue <int> p, q;
	int mid = A[1].a;
	if (A[1].b < mid) p.push(A[1].b);
	else q.push(-A[1].b);
	V[1] = val;
	for (int i=2;i<=N;i++){
		val += abs(mid - A[i].a) + abs(mid - A[i].b);
		if (A[i].a < mid) p.push(A[i].a);
		else q.push(-A[i].a);
		if (A[i].b < mid) p.push(A[i].b);
		else q.push(-A[i].b);
		while (sz(p) < sz(q)){
			int nxt = -q.top(); q.pop();
			p.push(mid);
			val += (lld)(nxt - mid) * sz(p) - (lld)(nxt - mid) * (sz(q) + 1);
			mid = nxt;
		}
		while (sz(p) > sz(q)+1){
			int nxt = p.top(); p.pop();
			q.push(-mid);
			val += (lld)(mid - nxt) * sz(q) - (lld)(mid - nxt) * (sz(p) + 1);
			mid = nxt;
		}
		V[i] = val;
	}
}
 
int main()
{
	scanf("%d%d", &K, &M);
	vector <int> arr;
	lld def = 0;
	while (M--){
		char p, q; int a, b;
		scanf(" %c%d %c%d", &p, &a, &q, &b);
		if (p == q){ def += abs(a-b); continue; }
		A[++N] = {a, b};
	}
	sort(A+1, A+N+1, [](const Z &a, const Z &b){
		return a.a+a.b < b.a+b.b;
	});
	proc(D);
	if (K == 1){ printf("%lld\n", D[N] + def + N); return 0; }
	reverse(A+1, A+N+1);
	proc(E);
	lld ans = 1e18;
	for (int i=0;i<=N;i++) ans = min(ans, def + D[i] + E[N-i] + N);
	printf("%lld\n", ans);
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:50:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |  scanf("%d%d", &K, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~
bridge.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |   scanf(" %c%d %c%d", &p, &a, &q, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 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

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 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 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 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 23 ms 2880 KB Output is correct
13 Correct 39 ms 2760 KB Output is correct
14 Correct 30 ms 2524 KB Output is correct
15 Correct 22 ms 1816 KB Output is correct
16 Correct 23 ms 2748 KB Output is correct
17 Correct 33 ms 2784 KB Output is correct
18 Correct 23 ms 2872 KB Output is correct
19 Correct 37 ms 2804 KB Output is correct
20 Correct 28 ms 2760 KB Output is correct
21 Correct 38 ms 2856 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 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 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 212 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 1 ms 340 KB Output is correct
24 Correct 1 ms 352 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 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 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 212 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 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 26 ms 3904 KB Output is correct
26 Correct 36 ms 3896 KB Output is correct
27 Correct 48 ms 3832 KB Output is correct
28 Correct 49 ms 3884 KB Output is correct
29 Correct 49 ms 3896 KB Output is correct
30 Correct 25 ms 2236 KB Output is correct
31 Correct 24 ms 3880 KB Output is correct
32 Correct 41 ms 3856 KB Output is correct
33 Correct 26 ms 3844 KB Output is correct
34 Correct 47 ms 3864 KB Output is correct
35 Correct 34 ms 4240 KB Output is correct
36 Correct 52 ms 3800 KB Output is correct
37 Correct 29 ms 3780 KB Output is correct