Submission #1441896


Source Code Expand

#include<bits/stdc++.h>

using namespace std;

int N, dp[100009];
char col[100009], lg[400009], sml[400009];
vector < int > v[100009];

void dfs (int nod, int tata)
{
    int sau = 0;
    for (auto son : v[nod])
        if (son != tata)
        {
            dfs (son, nod);
            int curr = dp[son] & sau;
            if (curr > 0)
                sau |= ((1 << (lg[curr] + 1)) - 1);
            sau |= dp[son];
        }
    col[nod] = sml[sau];
    dp[nod] = ((sau >> col[nod]) << col[nod]) | (1 << col[nod]);
}


int main ()
{
scanf ("%d", &N);
for (int i=1; i<N; i++)
{
    int x, y;
    scanf ("%d %d", &x, &y);
    v[x].push_back (y);
    v[y].push_back (x);
}
for (int i=2; i<=4 * N; i++)
    lg[i] = lg[i >> 1] + 1;
for (int i=1; i<=4 * N; i++)
    if (i & 1) sml[i] = sml[i >> 1] + 1;
    else sml[i] = 0;
dfs (1, -1);
printf ("%d\n", lg[dp[1]]);
return 0;
}

Submission Info

Submission Time
Task D - Uninity
User geniucos
Language C++14 (GCC 5.4.1)
Score 1400
Code Size 919 Byte
Status AC
Exec Time 43 ms
Memory 12672 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:28:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 scanf ("%d", &N);
                 ^
./Main.cpp:32:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d %d", &x, &y);
                            ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1400 / 1400
Status
AC × 2
AC × 74
Set Name Test Cases
Sample s1.txt, s2.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, 65.txt, 66.txt, 67.txt, 68.txt, 69.txt, 70.txt, 71.txt, 72.txt, s1.txt, s2.txt
Case Name Status Exec Time Memory
01.txt AC 40 ms 7040 KB
02.txt AC 40 ms 7040 KB
03.txt AC 40 ms 7040 KB
04.txt AC 40 ms 7040 KB
05.txt AC 40 ms 7040 KB
06.txt AC 40 ms 7040 KB
07.txt AC 40 ms 7040 KB
08.txt AC 40 ms 7040 KB
09.txt AC 28 ms 8576 KB
10.txt AC 29 ms 10112 KB
11.txt AC 15 ms 6272 KB
12.txt AC 15 ms 6528 KB
13.txt AC 43 ms 12672 KB
14.txt AC 39 ms 12160 KB
15.txt AC 43 ms 11392 KB
16.txt AC 42 ms 8960 KB
17.txt AC 30 ms 7416 KB
18.txt AC 30 ms 7412 KB
19.txt AC 32 ms 7552 KB
20.txt AC 32 ms 7424 KB
21.txt AC 33 ms 7424 KB
22.txt AC 34 ms 7424 KB
23.txt AC 30 ms 7416 KB
24.txt AC 30 ms 7416 KB
25.txt AC 34 ms 7164 KB
26.txt AC 36 ms 7296 KB
27.txt AC 36 ms 7296 KB
28.txt AC 38 ms 7296 KB
29.txt AC 39 ms 7296 KB
30.txt AC 42 ms 7296 KB
31.txt AC 42 ms 7296 KB
32.txt AC 40 ms 7168 KB
33.txt AC 39 ms 7168 KB
34.txt AC 41 ms 7168 KB
35.txt AC 40 ms 7168 KB
36.txt AC 40 ms 7040 KB
37.txt AC 40 ms 7040 KB
38.txt AC 40 ms 7040 KB
39.txt AC 40 ms 7040 KB
40.txt AC 39 ms 7168 KB
41.txt AC 39 ms 7168 KB
42.txt AC 41 ms 7040 KB
43.txt AC 41 ms 7040 KB
44.txt AC 35 ms 7552 KB
45.txt AC 37 ms 7552 KB
46.txt AC 38 ms 7552 KB
47.txt AC 37 ms 7552 KB
48.txt AC 39 ms 7424 KB
49.txt AC 38 ms 7424 KB
50.txt AC 40 ms 7296 KB
51.txt AC 40 ms 7296 KB
52.txt AC 41 ms 7168 KB
53.txt AC 41 ms 7168 KB
54.txt AC 41 ms 7168 KB
55.txt AC 41 ms 7168 KB
56.txt AC 30 ms 7416 KB
57.txt AC 39 ms 11132 KB
58.txt AC 38 ms 11132 KB
59.txt AC 41 ms 7168 KB
60.txt AC 41 ms 7168 KB
61.txt AC 33 ms 8568 KB
62.txt AC 32 ms 8568 KB
63.txt AC 2 ms 2560 KB
64.txt AC 2 ms 2560 KB
65.txt AC 2 ms 2560 KB
66.txt AC 2 ms 2560 KB
67.txt AC 2 ms 2560 KB
68.txt AC 2 ms 2560 KB
69.txt AC 2 ms 2560 KB
70.txt AC 2 ms 2560 KB
71.txt AC 2 ms 2560 KB
72.txt AC 2 ms 2560 KB
s1.txt AC 2 ms 2560 KB
s2.txt AC 2 ms 2560 KB