Submission #2501491
Source Code Expand
#include <bits/stdc++.h> using namespace std; #define rep(i, N) for (int i = 0; i < N; i++) #define pb push_back typedef long long ll; void dfs_ignore(int u, int p, vector<vector<int>>& G, vector<int>& a, vector<bool>& ignore) { ignore[u] = a[u]; for (int v: G[u]) if (v != p) { dfs_ignore(v, u, G, a, ignore); if (!ignore[v]) ignore[u] = false; } } int maji = INT_MIN / 10; void dfs_ma(int u, int p, vector<vector<int>>& G, vector<int>& a, vector<bool>& ignore, vector<int>& dp) { vector<int> unko = {0, 0}; for (int v: G[u]) if (v != p && !ignore[v]) { dfs_ma(v, u, G, a, ignore, dp); unko.pb(dp[v]); } sort(unko.rbegin(), unko.rend()); int x = a[u] ? 0 : 2; maji = max(maji, x + unko[0] + unko[1] + 1); dp[u] = x + unko[0]; } int main() { int N; cin >> N; vector<vector<int>> G(N); rep(i, N - 1) { int u, v; scanf("%d%d", &u, &v), u--, v--; G[u].pb(v), G[v].pb(u); } string s; cin >> s; vector<int> a(N); rep(u, N) a[u] = (s[u] == 'B'); int r = -1; rep(u, N) if (!a[u]) r = u; if (r == -1) { cout << 0 << endl; return 0; } vector<bool> ignore(N); dfs_ignore(r, -1, G, a, ignore); int ans = -1; rep(u, N) if (!ignore[u]) { ans += 2; int deg = 0; for (int v: G[u]) if (!ignore[v]) deg++; a[u] ^= deg % 2; ans += !a[u]; } if (ans == 2) { cout << 1 << endl; return 0; } int ma = 1; vector<int> dp(N); dfs_ma(r, -1, G, a, ignore, dp); ma = max(ma, maji); cout << ans - ma << endl; }
Submission Info
Submission Time | |
---|---|
Task | F - Monochrome Cat |
User | sugim48 |
Language | C++14 (GCC 5.4.1) |
Score | 800 |
Code Size | 1516 Byte |
Status | AC |
Exec Time | 92 ms |
Memory | 25344 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:35:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int u, v; scanf("%d%d", &u, &v), u--, v--; ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 800 / 800 | ||||
Status |
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|
Set Name | Test Cases |
---|---|
Sample | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 1_026.txt, 1_027.txt, 1_028.txt, 1_029.txt, 1_030.txt, 1_031.txt, 1_032.txt, 1_033.txt, 1_034.txt, 1_035.txt, 1_036.txt, 1_037.txt, 1_038.txt, 1_039.txt, 1_040.txt, 1_041.txt, 1_042.txt, 1_043.txt, 1_044.txt, 1_045.txt, 1_046.txt, 1_047.txt, 1_048.txt, 1_049.txt, 1_050.txt, 1_051.txt, 1_052.txt, 1_053.txt, 1_054.txt, 1_055.txt, 1_056.txt, 1_057.txt, 1_058.txt, 1_059.txt, 1_060.txt, 1_061.txt, 1_062.txt, 1_063.txt, 1_064.txt, 1_065.txt, 1_066.txt, 1_067.txt, 1_068.txt, 1_069.txt, 1_070.txt, 1_071.txt, 1_072.txt, 1_073.txt, 1_074.txt, 1_075.txt, 1_076.txt, 1_077.txt, 1_078.txt, 1_079.txt, 1_080.txt, 1_081.txt, 1_082.txt, 1_083.txt, 1_084.txt, 1_085.txt, 1_086.txt, 1_087.txt, 1_088.txt, 1_089.txt, 1_090.txt, 1_091.txt, 1_092.txt, 1_093.txt, 1_094.txt, 1_095.txt, 1_096.txt, 1_097.txt, 1_098.txt, 1_099.txt, 1_100.txt, 1_101.txt, 1_102.txt, 1_103.txt, 1_104.txt, 1_105.txt, 1_106.txt, 1_107.txt, 1_108.txt, 1_109.txt, 1_110.txt, 1_111.txt, 1_112.txt, 1_113.txt, 1_114.txt, 1_115.txt, 1_116.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 1 ms | 256 KB |
0_001.txt | AC | 1 ms | 256 KB |
0_002.txt | AC | 1 ms | 256 KB |
0_003.txt | AC | 1 ms | 256 KB |
1_003.txt | AC | 1 ms | 256 KB |
1_004.txt | AC | 1 ms | 256 KB |
1_005.txt | AC | 1 ms | 256 KB |
1_006.txt | AC | 1 ms | 256 KB |
1_007.txt | AC | 1 ms | 256 KB |
1_008.txt | AC | 1 ms | 256 KB |
1_009.txt | AC | 1 ms | 256 KB |
1_010.txt | AC | 1 ms | 256 KB |
1_011.txt | AC | 1 ms | 256 KB |
1_012.txt | AC | 1 ms | 256 KB |
1_013.txt | AC | 1 ms | 256 KB |
1_014.txt | AC | 1 ms | 256 KB |
1_015.txt | AC | 1 ms | 256 KB |
1_016.txt | AC | 1 ms | 256 KB |
1_017.txt | AC | 1 ms | 256 KB |
1_018.txt | AC | 1 ms | 256 KB |
1_019.txt | AC | 1 ms | 256 KB |
1_020.txt | AC | 1 ms | 256 KB |
1_021.txt | AC | 1 ms | 256 KB |
1_022.txt | AC | 1 ms | 256 KB |
1_023.txt | AC | 1 ms | 256 KB |
1_024.txt | AC | 1 ms | 256 KB |
1_025.txt | AC | 1 ms | 256 KB |
1_026.txt | AC | 1 ms | 256 KB |
1_027.txt | AC | 1 ms | 256 KB |
1_028.txt | AC | 1 ms | 256 KB |
1_029.txt | AC | 1 ms | 256 KB |
1_030.txt | AC | 1 ms | 256 KB |
1_031.txt | AC | 1 ms | 256 KB |
1_032.txt | AC | 1 ms | 256 KB |
1_033.txt | AC | 1 ms | 256 KB |
1_034.txt | AC | 1 ms | 256 KB |
1_035.txt | AC | 1 ms | 256 KB |
1_036.txt | AC | 1 ms | 256 KB |
1_037.txt | AC | 1 ms | 256 KB |
1_038.txt | AC | 1 ms | 256 KB |
1_039.txt | AC | 1 ms | 256 KB |
1_040.txt | AC | 1 ms | 256 KB |
1_041.txt | AC | 1 ms | 256 KB |
1_042.txt | AC | 1 ms | 256 KB |
1_043.txt | AC | 1 ms | 256 KB |
1_044.txt | AC | 1 ms | 256 KB |
1_045.txt | AC | 23 ms | 5888 KB |
1_046.txt | AC | 28 ms | 7680 KB |
1_047.txt | AC | 40 ms | 6272 KB |
1_048.txt | AC | 38 ms | 9856 KB |
1_049.txt | AC | 60 ms | 18048 KB |
1_050.txt | AC | 45 ms | 12288 KB |
1_051.txt | AC | 33 ms | 6136 KB |
1_052.txt | AC | 8 ms | 1664 KB |
1_053.txt | AC | 28 ms | 5752 KB |
1_054.txt | AC | 12 ms | 2556 KB |
1_055.txt | AC | 36 ms | 6136 KB |
1_056.txt | AC | 15 ms | 3196 KB |
1_057.txt | AC | 2 ms | 512 KB |
1_058.txt | AC | 28 ms | 7296 KB |
1_059.txt | AC | 14 ms | 2432 KB |
1_060.txt | AC | 35 ms | 7424 KB |
1_061.txt | AC | 60 ms | 12928 KB |
1_062.txt | AC | 26 ms | 6784 KB |
1_063.txt | AC | 31 ms | 4480 KB |
1_064.txt | AC | 21 ms | 3200 KB |
1_065.txt | AC | 3 ms | 640 KB |
1_066.txt | AC | 33 ms | 5372 KB |
1_067.txt | AC | 10 ms | 1536 KB |
1_068.txt | AC | 23 ms | 3712 KB |
1_069.txt | AC | 15 ms | 1920 KB |
1_070.txt | AC | 26 ms | 3328 KB |
1_071.txt | AC | 33 ms | 5376 KB |
1_072.txt | AC | 23 ms | 3456 KB |
1_073.txt | AC | 6 ms | 896 KB |
1_074.txt | AC | 4 ms | 640 KB |
1_075.txt | AC | 25 ms | 3072 KB |
1_076.txt | AC | 58 ms | 6656 KB |
1_077.txt | AC | 32 ms | 5248 KB |
1_078.txt | AC | 13 ms | 2048 KB |
1_079.txt | AC | 25 ms | 3072 KB |
1_080.txt | AC | 25 ms | 3456 KB |
1_081.txt | AC | 81 ms | 16640 KB |
1_082.txt | AC | 85 ms | 19712 KB |
1_083.txt | AC | 41 ms | 6272 KB |
1_084.txt | AC | 55 ms | 14080 KB |
1_085.txt | AC | 92 ms | 25344 KB |
1_086.txt | AC | 85 ms | 24320 KB |
1_087.txt | AC | 45 ms | 7800 KB |
1_088.txt | AC | 40 ms | 7544 KB |
1_089.txt | AC | 32 ms | 6776 KB |
1_090.txt | AC | 34 ms | 6776 KB |
1_091.txt | AC | 48 ms | 7800 KB |
1_092.txt | AC | 33 ms | 6776 KB |
1_093.txt | AC | 73 ms | 11904 KB |
1_094.txt | AC | 69 ms | 12544 KB |
1_095.txt | AC | 41 ms | 6400 KB |
1_096.txt | AC | 54 ms | 8960 KB |
1_097.txt | AC | 72 ms | 11904 KB |
1_098.txt | AC | 67 ms | 12032 KB |
1_099.txt | AC | 55 ms | 7292 KB |
1_100.txt | AC | 50 ms | 7164 KB |
1_101.txt | AC | 36 ms | 6524 KB |
1_102.txt | AC | 41 ms | 6524 KB |
1_103.txt | AC | 57 ms | 7292 KB |
1_104.txt | AC | 48 ms | 7036 KB |
1_105.txt | AC | 69 ms | 6784 KB |
1_106.txt | AC | 56 ms | 6784 KB |
1_107.txt | AC | 42 ms | 6400 KB |
1_108.txt | AC | 45 ms | 6400 KB |
1_109.txt | AC | 62 ms | 6784 KB |
1_110.txt | AC | 55 ms | 6784 KB |
1_111.txt | AC | 65 ms | 6784 KB |
1_112.txt | AC | 58 ms | 6784 KB |
1_113.txt | AC | 40 ms | 6400 KB |
1_114.txt | AC | 47 ms | 6400 KB |
1_115.txt | AC | 73 ms | 6784 KB |
1_116.txt | AC | 61 ms | 6784 KB |