oj.uz

Submission #292992

# Submission time Handle Problem Language Result Execution time Memory
292992 2020-09-07T15:22:57 Z 송준혁(#5803) ROI16_sending (ROI16_sending) C++17
48 / 100
 5000 ms 13692 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

int N, M;
int ans, ansu=1, ansv=2;
int D[202020], P[202020][20];
int U[202020], V[202020];
vector<int> adj[202020];

int LCA(int u, int v){
	if (D[u] > D[v]) swap(u, v);
	for (int i=18; i>=0; i--) if (D[u] <= D[v]-(1<<i)) v=P[v][i];
	if (u == v) return u;
	for (int i=18; i>=0; i--) if (P[u][i] != P[v][i]) u=P[u][i], v=P[v][i];
	return P[u][0];
}

int inter(int u1, int v1, int u2, int v2){
	vector<int> t;
	t.pb(D[LCA(u1, u2)]), t.pb(D[LCA(u1, v2)]);
	t.pb(D[LCA(v1, u2)]), t.pb(D[LCA(v1, v2)]);
	sort(t.begin(), t.end());
	return t[2]+t[3]-2*max(D[LCA(u1, v1)], D[LCA(u2, v2)]);
}

int main(){
	scanf("%d %d", &N, &M);
	for (int i=2; i<=N; i++){
		int p;
		scanf("%d", &p);
		P[i][0] = p, D[i] = D[p]+1;
		for (int j=1; j<=18; j++) P[i][j] = P[P[i][j-1]][j-1];
	}
	for (int i=1; i<=M; i++) scanf("%d %d", &U[i], &V[i]);
	for (int i=1; i<M; i++) for (int j=i+1; j<=M; j++){
		int r = inter(U[i], V[i], U[j], V[j]);
		if (ans < r) ans=r, ansu=i, ansv=j;
	}
	printf("%d\n%d %d\n", ans, ansu, ansv);
	return 0;
}

Compilation message

sending.cpp: In function 'int main()':
sending.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |  scanf("%d %d", &N, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~~
sending.cpp:33:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   33 |   scanf("%d", &p);
      |   ~~~~~^~~~~~~~~~
sending.cpp:37:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |  for (int i=1; i<=M; i++) scanf("%d %d", &U[i], &V[i]);
      |                           ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 367 ms 5468 KB Output is correct
21 Correct 437 ms 5472 KB Output is correct
22 Correct 425 ms 5468 KB Output is correct
23 Correct 554 ms 5468 KB Output is correct
24 Correct 453 ms 5496 KB Output is correct
25 Correct 308 ms 5468 KB Output is correct
26 Correct 442 ms 5376 KB Output is correct
27 Correct 320 ms 5376 KB Output is correct
28 Correct 347 ms 5376 KB Output is correct
29 Correct 187 ms 5376 KB Output is correct
30 Correct 82 ms 5376 KB Output is correct
31 Correct 85 ms 5468 KB Output is correct
32 Correct 434 ms 5468 KB Output is correct
33 Correct 470 ms 5376 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 367 ms 5468 KB Output is correct
21 Correct 437 ms 5472 KB Output is correct
22 Correct 425 ms 5468 KB Output is correct
23 Correct 554 ms 5468 KB Output is correct
24 Correct 453 ms 5496 KB Output is correct
25 Correct 308 ms 5468 KB Output is correct
26 Correct 442 ms 5376 KB Output is correct
27 Correct 320 ms 5376 KB Output is correct
28 Correct 347 ms 5376 KB Output is correct
29 Correct 187 ms 5376 KB Output is correct
30 Correct 82 ms 5376 KB Output is correct
31 Correct 85 ms 5468 KB Output is correct
32 Correct 434 ms 5468 KB Output is correct
33 Correct 470 ms 5376 KB Output is correct
34 Correct 496 ms 13352 KB Output is correct
35 Correct 528 ms 13352 KB Output is correct
36 Correct 963 ms 13360 KB Output is correct
37 Correct 1220 ms 13356 KB Output is correct
38 Correct 963 ms 13312 KB Output is correct
39 Correct 351 ms 13432 KB Output is correct
40 Correct 1018 ms 13432 KB Output is correct
41 Correct 341 ms 13304 KB Output is correct
42 Correct 481 ms 13348 KB Output is correct
43 Correct 249 ms 13264 KB Output is correct
44 Correct 177 ms 13304 KB Output is correct
45 Correct 117 ms 13252 KB Output is correct
46 Correct 904 ms 13304 KB Output is correct
47 Correct 841 ms 13360 KB Output is correct

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 367 ms 5468 KB Output is correct
21 Correct 437 ms 5472 KB Output is correct
22 Correct 425 ms 5468 KB Output is correct
23 Correct 554 ms 5468 KB Output is correct
24 Correct 453 ms 5496 KB Output is correct
25 Correct 308 ms 5468 KB Output is correct
26 Correct 442 ms 5376 KB Output is correct
27 Correct 320 ms 5376 KB Output is correct
28 Correct 347 ms 5376 KB Output is correct
29 Correct 187 ms 5376 KB Output is correct
30 Correct 82 ms 5376 KB Output is correct
31 Correct 85 ms 5468 KB Output is correct
32 Correct 434 ms 5468 KB Output is correct
33 Correct 470 ms 5376 KB Output is correct
34 Correct 496 ms 13352 KB Output is correct
35 Correct 528 ms 13352 KB Output is correct
36 Correct 963 ms 13360 KB Output is correct
37 Correct 1220 ms 13356 KB Output is correct
38 Correct 963 ms 13312 KB Output is correct
39 Correct 351 ms 13432 KB Output is correct
40 Correct 1018 ms 13432 KB Output is correct
41 Correct 341 ms 13304 KB Output is correct
42 Correct 481 ms 13348 KB Output is correct
43 Correct 249 ms 13264 KB Output is correct
44 Correct 177 ms 13304 KB Output is correct
45 Correct 117 ms 13252 KB Output is correct
46 Correct 904 ms 13304 KB Output is correct
47 Correct 841 ms 13360 KB Output is correct
48 Execution timed out 5016 ms 13304 KB Time limit exceeded
49 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5034 ms 13692 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5056 ms 13692 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 367 ms 5468 KB Output is correct
21 Correct 437 ms 5472 KB Output is correct
22 Correct 425 ms 5468 KB Output is correct
23 Correct 554 ms 5468 KB Output is correct
24 Correct 453 ms 5496 KB Output is correct
25 Correct 308 ms 5468 KB Output is correct
26 Correct 442 ms 5376 KB Output is correct
27 Correct 320 ms 5376 KB Output is correct
28 Correct 347 ms 5376 KB Output is correct
29 Correct 187 ms 5376 KB Output is correct
30 Correct 82 ms 5376 KB Output is correct
31 Correct 85 ms 5468 KB Output is correct
32 Correct 434 ms 5468 KB Output is correct
33 Correct 470 ms 5376 KB Output is correct
34 Correct 496 ms 13352 KB Output is correct
35 Correct 528 ms 13352 KB Output is correct
36 Correct 963 ms 13360 KB Output is correct
37 Correct 1220 ms 13356 KB Output is correct
38 Correct 963 ms 13312 KB Output is correct
39 Correct 351 ms 13432 KB Output is correct
40 Correct 1018 ms 13432 KB Output is correct
41 Correct 341 ms 13304 KB Output is correct
42 Correct 481 ms 13348 KB Output is correct
43 Correct 249 ms 13264 KB Output is correct
44 Correct 177 ms 13304 KB Output is correct
45 Correct 117 ms 13252 KB Output is correct
46 Correct 904 ms 13304 KB Output is correct
47 Correct 841 ms 13360 KB Output is correct
48 Execution timed out 5016 ms 13304 KB Time limit exceeded
49 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 6 ms 5120 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 367 ms 5468 KB Output is correct
21 Correct 437 ms 5472 KB Output is correct
22 Correct 425 ms 5468 KB Output is correct
23 Correct 554 ms 5468 KB Output is correct
24 Correct 453 ms 5496 KB Output is correct
25 Correct 308 ms 5468 KB Output is correct
26 Correct 442 ms 5376 KB Output is correct
27 Correct 320 ms 5376 KB Output is correct
28 Correct 347 ms 5376 KB Output is correct
29 Correct 187 ms 5376 KB Output is correct
30 Correct 82 ms 5376 KB Output is correct
31 Correct 85 ms 5468 KB Output is correct
32 Correct 434 ms 5468 KB Output is correct
33 Correct 470 ms 5376 KB Output is correct
34 Correct 496 ms 13352 KB Output is correct
35 Correct 528 ms 13352 KB Output is correct
36 Correct 963 ms 13360 KB Output is correct
37 Correct 1220 ms 13356 KB Output is correct
38 Correct 963 ms 13312 KB Output is correct
39 Correct 351 ms 13432 KB Output is correct
40 Correct 1018 ms 13432 KB Output is correct
41 Correct 341 ms 13304 KB Output is correct
42 Correct 481 ms 13348 KB Output is correct
43 Correct 249 ms 13264 KB Output is correct
44 Correct 177 ms 13304 KB Output is correct
45 Correct 117 ms 13252 KB Output is correct
46 Correct 904 ms 13304 KB Output is correct
47 Correct 841 ms 13360 KB Output is correct
48 Execution timed out 5016 ms 13304 KB Time limit exceeded
49 Halted 0 ms 0 KB -