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답안 #263234

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
263234 2020-08-13T14:23:22 Z patrikpavic2 Designated Cities (JOI19_designated_cities) C++17
100 / 100
 718 ms 53268 KB 
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <vector>
#include <set>

#define X first
#define Y second
#define PB push_back

using namespace std;

typedef long long ll;
typedef pair < int, int > pii;
typedef pair < int, pii > pip;

const int N = 2e5 + 500;

vector < pii > v[N];
vector < pip > v2[N];

set < pair < ll, int > > S;

int n, deg[N], bio[N];
ll cur, bst[N];
ll C[N], uk;
 
void start(int x, int lst){
	for(pip nxt : v2[x]){
		if(nxt.X == lst) continue;
		C[1] += nxt.Y.X; start(nxt.X, x);
	}
}
 
void dfs(int x, int lst){
	for(pip nxt : v2[x]){
		if(nxt.X == lst) continue;
		C[nxt.X] = C[x] - nxt.Y.X + nxt.Y.Y;
		dfs(nxt.X, x);
	}
	bst[1] = max(bst[1], C[x]);
}

inline int pronadi(int x){
	for(pii nxt : v[x])
		if(deg[nxt.X])
			return nxt.Y;
	return 0;
}


int main(){
	for(int i = 0;i < N;i++)
		bst[i] = 1e18;
	scanf("%d", &n);
	for(int i = 1;i < n;i++){
		int x, y, a, b; scanf("%d%d%d%d", &x, &y, &b, &a);
		v[x].PB({y, a}); v[y].PB({x, b});
		v2[x].PB({y, {a, b}}); v2[y].PB({x, {b, a}});
		uk += a + b;
		deg[x]++; deg[y]++;
	}
	for(int i = 1;i <= n;i++){
		if(deg[i] == 1)
			S.insert({v[i][0].Y, i});
	}
	bst[(int)S.size()] = cur;
	int lisce = (int)S.size();
	for(;S.size() > 2;){
		int brs = S.begin() -> Y; 
		ll tez = S.begin() -> X;
		deg[brs] = 0;
		S.erase(S.begin());
		for(pii nxt : v[brs]){
			if(deg[nxt.X] > 0){
				deg[nxt.X]--;
				if(deg[nxt.X] == 1)
					S.insert({pronadi(nxt.X) + tez, nxt.X});
				else
					bst[(int)S.size()] = bst[(int)S.size() + 1] + tez;
				break;
			}
		}
	}
	bst[1] = 0;
	start(1, 1); dfs(1, 1);
	bst[1] = uk - bst[1];
	int q; scanf("%d", &q);
	for(;q--;){
		int x; scanf("%d", &x);
		x = min(x, lisce);
		printf("%lld\n", bst[x]);
	}
	
}

Compilation message

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:55:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   55 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
designated_cities.cpp:57:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |   int x, y, a, b; scanf("%d%d%d%d", &x, &y, &b, &a);
      |                   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:88:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |  int q; scanf("%d", &q);
      |         ~~~~~^~~~~~~~~~
designated_cities.cpp:90:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   90 |   int x; scanf("%d", &x);
      |          ~~~~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 11264 KB Output is correct
2 Correct 7 ms 11264 KB Output is correct
3 Correct 8 ms 11264 KB Output is correct
4 Correct 9 ms 11264 KB Output is correct
5 Correct 7 ms 11264 KB Output is correct
6 Correct 7 ms 11264 KB Output is correct
7 Correct 7 ms 11392 KB Output is correct
8 Correct 7 ms 11264 KB Output is correct
9 Correct 7 ms 11264 KB Output is correct
10 Correct 8 ms 11264 KB Output is correct
11 Correct 7 ms 11264 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11264 KB Output is correct
2 Correct 649 ms 34232 KB Output is correct
3 Correct 434 ms 33912 KB Output is correct
4 Correct 535 ms 34424 KB Output is correct
5 Correct 638 ms 34840 KB Output is correct
6 Correct 609 ms 35520 KB Output is correct
7 Correct 573 ms 37020 KB Output is correct
8 Correct 498 ms 35192 KB Output is correct
9 Correct 496 ms 42640 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11264 KB Output is correct
2 Correct 610 ms 34384 KB Output is correct
3 Correct 434 ms 41468 KB Output is correct
4 Correct 570 ms 39492 KB Output is correct
5 Correct 621 ms 41260 KB Output is correct
6 Correct 624 ms 41932 KB Output is correct
7 Correct 526 ms 47636 KB Output is correct
8 Correct 492 ms 43512 KB Output is correct
9 Correct 477 ms 48800 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 11264 KB Output is correct
2 Correct 7 ms 11264 KB Output is correct
3 Correct 8 ms 11264 KB Output is correct
4 Correct 9 ms 11264 KB Output is correct
5 Correct 7 ms 11264 KB Output is correct
6 Correct 7 ms 11264 KB Output is correct
7 Correct 7 ms 11392 KB Output is correct
8 Correct 7 ms 11264 KB Output is correct
9 Correct 7 ms 11264 KB Output is correct
10 Correct 8 ms 11264 KB Output is correct
11 Correct 7 ms 11264 KB Output is correct
12 Correct 7 ms 11264 KB Output is correct
13 Correct 10 ms 11552 KB Output is correct
14 Correct 10 ms 11520 KB Output is correct
15 Correct 10 ms 11648 KB Output is correct
16 Correct 12 ms 11600 KB Output is correct
17 Correct 10 ms 11648 KB Output is correct
18 Correct 10 ms 11648 KB Output is correct
19 Correct 10 ms 11648 KB Output is correct
20 Correct 11 ms 11648 KB Output is correct
21 Correct 13 ms 11648 KB Output is correct
22 Correct 10 ms 11648 KB Output is correct
23 Correct 10 ms 11648 KB Output is correct
24 Correct 10 ms 11648 KB Output is correct
25 Correct 10 ms 11648 KB Output is correct
26 Correct 10 ms 11776 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11264 KB Output is correct
2 Correct 649 ms 34232 KB Output is correct
3 Correct 434 ms 33912 KB Output is correct
4 Correct 535 ms 34424 KB Output is correct
5 Correct 638 ms 34840 KB Output is correct
6 Correct 609 ms 35520 KB Output is correct
7 Correct 573 ms 37020 KB Output is correct
8 Correct 498 ms 35192 KB Output is correct
9 Correct 496 ms 42640 KB Output is correct
10 Correct 7 ms 11264 KB Output is correct
11 Correct 610 ms 34384 KB Output is correct
12 Correct 434 ms 41468 KB Output is correct
13 Correct 570 ms 39492 KB Output is correct
14 Correct 621 ms 41260 KB Output is correct
15 Correct 624 ms 41932 KB Output is correct
16 Correct 526 ms 47636 KB Output is correct
17 Correct 492 ms 43512 KB Output is correct
18 Correct 477 ms 48800 KB Output is correct
19 Correct 8 ms 11264 KB Output is correct
20 Correct 651 ms 40696 KB Output is correct
21 Correct 456 ms 41596 KB Output is correct
22 Correct 598 ms 39332 KB Output is correct
23 Correct 663 ms 40824 KB Output is correct
24 Correct 666 ms 39800 KB Output is correct
25 Correct 691 ms 40784 KB Output is correct
26 Correct 672 ms 39816 KB Output is correct
27 Correct 637 ms 41252 KB Output is correct
28 Correct 573 ms 41848 KB Output is correct
29 Correct 592 ms 39800 KB Output is correct
30 Correct 569 ms 41380 KB Output is correct
31 Correct 553 ms 44572 KB Output is correct
32 Correct 507 ms 43640 KB Output is correct
33 Correct 468 ms 49172 KB Output is correct

Subtask #6
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 11264 KB Output is correct
2 Correct 7 ms 11264 KB Output is correct
3 Correct 8 ms 11264 KB Output is correct
4 Correct 9 ms 11264 KB Output is correct
5 Correct 7 ms 11264 KB Output is correct
6 Correct 7 ms 11264 KB Output is correct
7 Correct 7 ms 11392 KB Output is correct
8 Correct 7 ms 11264 KB Output is correct
9 Correct 7 ms 11264 KB Output is correct
10 Correct 8 ms 11264 KB Output is correct
11 Correct 7 ms 11264 KB Output is correct
12 Correct 7 ms 11264 KB Output is correct
13 Correct 649 ms 34232 KB Output is correct
14 Correct 434 ms 33912 KB Output is correct
15 Correct 535 ms 34424 KB Output is correct
16 Correct 638 ms 34840 KB Output is correct
17 Correct 609 ms 35520 KB Output is correct
18 Correct 573 ms 37020 KB Output is correct
19 Correct 498 ms 35192 KB Output is correct
20 Correct 496 ms 42640 KB Output is correct
21 Correct 7 ms 11264 KB Output is correct
22 Correct 610 ms 34384 KB Output is correct
23 Correct 434 ms 41468 KB Output is correct
24 Correct 570 ms 39492 KB Output is correct
25 Correct 621 ms 41260 KB Output is correct
26 Correct 624 ms 41932 KB Output is correct
27 Correct 526 ms 47636 KB Output is correct
28 Correct 492 ms 43512 KB Output is correct
29 Correct 477 ms 48800 KB Output is correct
30 Correct 7 ms 11264 KB Output is correct
31 Correct 10 ms 11552 KB Output is correct
32 Correct 10 ms 11520 KB Output is correct
33 Correct 10 ms 11648 KB Output is correct
34 Correct 12 ms 11600 KB Output is correct
35 Correct 10 ms 11648 KB Output is correct
36 Correct 10 ms 11648 KB Output is correct
37 Correct 10 ms 11648 KB Output is correct
38 Correct 11 ms 11648 KB Output is correct
39 Correct 13 ms 11648 KB Output is correct
40 Correct 10 ms 11648 KB Output is correct
41 Correct 10 ms 11648 KB Output is correct
42 Correct 10 ms 11648 KB Output is correct
43 Correct 10 ms 11648 KB Output is correct
44 Correct 10 ms 11776 KB Output is correct
45 Correct 8 ms 11264 KB Output is correct
46 Correct 651 ms 40696 KB Output is correct
47 Correct 456 ms 41596 KB Output is correct
48 Correct 598 ms 39332 KB Output is correct
49 Correct 663 ms 40824 KB Output is correct
50 Correct 666 ms 39800 KB Output is correct
51 Correct 691 ms 40784 KB Output is correct
52 Correct 672 ms 39816 KB Output is correct
53 Correct 637 ms 41252 KB Output is correct
54 Correct 573 ms 41848 KB Output is correct
55 Correct 592 ms 39800 KB Output is correct
56 Correct 569 ms 41380 KB Output is correct
57 Correct 553 ms 44572 KB Output is correct
58 Correct 507 ms 43640 KB Output is correct
59 Correct 468 ms 49172 KB Output is correct
60 Correct 7 ms 11264 KB Output is correct
61 Correct 655 ms 43512 KB Output is correct
62 Correct 485 ms 42104 KB Output is correct
63 Correct 625 ms 41976 KB Output is correct
64 Correct 684 ms 43384 KB Output is correct
65 Correct 718 ms 42032 KB Output is correct
66 Correct 680 ms 43384 KB Output is correct
67 Correct 640 ms 42132 KB Output is correct
68 Correct 647 ms 43972 KB Output is correct
69 Correct 643 ms 44408 KB Output is correct
70 Correct 669 ms 41836 KB Output is correct
71 Correct 698 ms 44112 KB Output is correct
72 Correct 658 ms 47224 KB Output is correct
73 Correct 572 ms 45232 KB Output is correct
74 Correct 610 ms 53268 KB Output is correct