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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#77571 | #5502. Dazzling Mountain | XKError | ML | 2559ms | 629356kb | C++ | 1.1kb | 2023-02-15 09:06:07 | 2023-02-15 09:06:08 |
Judging History
answer
#include <bits/stdc++.h>
#define maxn 10000005
using namespace std;
int n;
vector<int> g[maxn];
vector<int> t[maxn];
int f[maxn];
int siz[maxn];
int cnt;
int tot;
int res[maxn];
void dfs(int u, int fa) {
f[u] = fa;
siz[u] = 1;
for (int v : g[u]) {
if (v == fa) continue;
dfs(v, u);
siz[u] += siz[v];
}
if (siz[u] == 1) t[1].push_back(u);
}
int main() {
int T;
scanf("%d", &T);
while (T--) {
scanf("%d", &n);
for (int i = 1; i < n; i++) {
int x, y;
scanf("%d%d", &x, &y);
g[x].push_back(y);
g[y].push_back(x);
}
dfs(1, 0);
cnt = 1;
res[1] = 1;
for (int i = 1; i < n; i++) {
while (!t[i].empty()) {
int x = t[i].back(); t[i].pop_back();
if (t[i].empty()) --cnt;
x = f[x];
if (t[siz[x]].empty()) ++cnt;
t[siz[x]].push_back(x);
if (cnt == 1) res[siz[x]] = 1;
}
}
tot = 0;
for (int i = 1; i <= n; i++) if (res[i]) ++tot;
printf("%d\n", tot);
for (int i = 1; i <= n; i++) if (res[i]) printf("%d ", i);
puts("");
for (int i = 1; i <= n; i++) g[i].clear(), t[i].clear(), res[i] = 0;
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 112ms
memory: 476644kb
input:
1 9 1 2 2 3 3 4 3 5 2 6 6 7 7 8 7 9
output:
4 1 3 8 9
result:
ok 2 lines
Test #2:
score: 0
Accepted
time: 622ms
memory: 472848kb
input:
10000 906 675 189 555 889 491 97 791 419 175 694 713 842 788 513 159 354 670 815 652 546 253 87 89 278 563 429 522 900 202 657 331 865 35 605 735 532 612 471 657 386 7 886 856 164 224 777 73 534 481 631 711 698 240 465 115 181 191 825 311 155 709 501 207 849 294 546 591 682 96 405 210 696 861 13 781...
output:
63 1 3 4 34 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 6 1 2 3 4 5 11 28 1 2 3 4 5 6 15 16 17 18 19 20 21...
result:
ok 20000 lines
Test #3:
score: 0
Accepted
time: 1838ms
memory: 524224kb
input:
10 257056 71485 24974 175037 254578 15503 255561 2268 184070 101954 23776 151400 163190 209539 157934 61908 8578 251032 109510 106012 63219 6393 135129 229530 202665 135202 195080 36226 54716 113653 27375 130515 126621 51348 62149 190321 116509 235895 205631 193944 184367 234172 88847 217084 158554 ...
output:
24809 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 10...
result:
ok 20 lines
Test #4:
score: 0
Accepted
time: 2559ms
memory: 629356kb
input:
3 1000000 929036 746780 508756 963246 215473 613289 951642 391332 605398 514190 932199 548138 439718 525533 976267 837482 522952 131368 536100 143927 866830 627096 995333 784817 209340 817981 278894 972055 340159 479037 505969 156301 962674 345998 328184 514559 522443 340810 671564 2940 233204 19714...
output:
1000000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...
result:
ok 6 lines
Test #5:
score: -100
Memory Limit Exceeded
input:
3 1000000 762755 663578 736521 890486 762558 739995 2696 497271 66774 285301 58082 960305 515605 849755 585841 791747 805356 25220 199034 206010 792516 101430 419916 601668 256275 440770 76325 556632 286424 45286 173087 212370 760515 256873 614983 749308 248450 520646 937026 203197 698482 110785 336...