oj.uz

Submission #124491

# Submission time Handle Problem Language Result Execution time Memory
124491 2019-07-03T12:12:49 Z DJ035 None (KOI17_cat) C++14
100 / 100
 571 ms 70064 KB 
#include <bits/stdc++.h>
using namespace std;
#define MAXN 300005
#define pb push_back
typedef long long lld;
int N, M, C;
int dep[MAXN];
int U[MAXN], D[MAXN], F[MAXN];
vector <int> con[MAXN], child[MAXN];
void dfs(int n, int from)
{
    for (int t: con[n]) if (t != from){
        if (!dep[t]){
            child[n].pb(t); dep[t] = dep[n]+1;
            int tmp = U[n]; dfs(t, n); F[t] = U[n]-tmp;
            U[n] += U[t]; D[n] += D[t];
        }else if (dep[t] < dep[n]){
            D[n]++; U[t]++;
        }
    }
}
int main()
{
    scanf("%d%d", &N, &M);
    for (int i=1;i<=M;i++){
        int a, b; scanf("%d%d", &a, &b);
        con[a].pb(b); con[b].pb(a);
    }
    dep[1] = 1; dfs(1, 0);
 
    lld ans = 0;
    for (int i=1;i<=N;i++){
        bool skip = 0;
        for (int t: child[i])
            if (D[t]-F[t] > 1 || U[t]) skip = 1;
        if (skip || M-(N-1)-D[i] != 0) continue;
        ans += i;
    }
    printf("%lld\n", ans);
}

Compilation message

cat.cpp: In function 'int main()':
cat.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &N, &M);
     ~~~~~^~~~~~~~~~~~~~~~
cat.cpp:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int a, b; scanf("%d%d", &a, &b);
                   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 14456 KB Output is correct
2 Correct 15 ms 14456 KB Output is correct
3 Correct 15 ms 14452 KB Output is correct
4 Correct 15 ms 14584 KB Output is correct
5 Correct 17 ms 14968 KB Output is correct
6 Correct 39 ms 14840 KB Output is correct
7 Correct 18 ms 15224 KB Output is correct
8 Correct 18 ms 14840 KB Output is correct
9 Correct 17 ms 15352 KB Output is correct
10 Correct 21 ms 15096 KB Output is correct
11 Correct 18 ms 15352 KB Output is correct
12 Correct 17 ms 15224 KB Output is correct
13 Correct 17 ms 14968 KB Output is correct
14 Correct 17 ms 14968 KB Output is correct
15 Correct 18 ms 14456 KB Output is correct
16 Correct 18 ms 14456 KB Output is correct
17 Correct 15 ms 14456 KB Output is correct
18 Correct 15 ms 14456 KB Output is correct
19 Correct 18 ms 14456 KB Output is correct
20 Correct 19 ms 15168 KB Output is correct
21 Correct 18 ms 15324 KB Output is correct
22 Correct 22 ms 15224 KB Output is correct
23 Correct 19 ms 14712 KB Output is correct
24 Correct 20 ms 14972 KB Output is correct
25 Correct 15 ms 14456 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 392 ms 37564 KB Output is correct
2 Correct 358 ms 37624 KB Output is correct
3 Correct 347 ms 37620 KB Output is correct
4 Correct 376 ms 37600 KB Output is correct
5 Correct 384 ms 37556 KB Output is correct
6 Correct 386 ms 37644 KB Output is correct
7 Correct 382 ms 37652 KB Output is correct
8 Correct 358 ms 37628 KB Output is correct
9 Correct 371 ms 37564 KB Output is correct
10 Correct 360 ms 37700 KB Output is correct
11 Correct 374 ms 38284 KB Output is correct
12 Correct 359 ms 38268 KB Output is correct
13 Correct 384 ms 38320 KB Output is correct
14 Correct 357 ms 38264 KB Output is correct
15 Correct 377 ms 38304 KB Output is correct
16 Correct 378 ms 44036 KB Output is correct
17 Correct 383 ms 45436 KB Output is correct
18 Correct 376 ms 42952 KB Output is correct
19 Correct 403 ms 44152 KB Output is correct
20 Correct 370 ms 42964 KB Output is correct
21 Correct 366 ms 40696 KB Output is correct
22 Correct 374 ms 52128 KB Output is correct
23 Correct 474 ms 57100 KB Output is correct
24 Correct 380 ms 40952 KB Output is correct
25 Correct 365 ms 54812 KB Output is correct
26 Correct 194 ms 69880 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 189 ms 69936 KB Output is correct
2 Correct 189 ms 69904 KB Output is correct
3 Correct 189 ms 69960 KB Output is correct
4 Correct 185 ms 69956 KB Output is correct
5 Correct 186 ms 69976 KB Output is correct
6 Correct 181 ms 69948 KB Output is correct
7 Correct 182 ms 69892 KB Output is correct
8 Correct 181 ms 70064 KB Output is correct
9 Correct 181 ms 69992 KB Output is correct
10 Correct 201 ms 61476 KB Output is correct
11 Correct 204 ms 61556 KB Output is correct
12 Correct 197 ms 61520 KB Output is correct
13 Correct 203 ms 61656 KB Output is correct
14 Correct 200 ms 61560 KB Output is correct
15 Correct 202 ms 52976 KB Output is correct
16 Correct 241 ms 53060 KB Output is correct
17 Correct 208 ms 53088 KB Output is correct
18 Correct 209 ms 52952 KB Output is correct
19 Correct 227 ms 53132 KB Output is correct

Subtask #4
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 14456 KB Output is correct
2 Correct 15 ms 14456 KB Output is correct
3 Correct 15 ms 14452 KB Output is correct
4 Correct 15 ms 14584 KB Output is correct
5 Correct 17 ms 14968 KB Output is correct
6 Correct 39 ms 14840 KB Output is correct
7 Correct 18 ms 15224 KB Output is correct
8 Correct 18 ms 14840 KB Output is correct
9 Correct 17 ms 15352 KB Output is correct
10 Correct 21 ms 15096 KB Output is correct
11 Correct 18 ms 15352 KB Output is correct
12 Correct 17 ms 15224 KB Output is correct
13 Correct 17 ms 14968 KB Output is correct
14 Correct 17 ms 14968 KB Output is correct
15 Correct 18 ms 14456 KB Output is correct
16 Correct 18 ms 14456 KB Output is correct
17 Correct 15 ms 14456 KB Output is correct
18 Correct 15 ms 14456 KB Output is correct
19 Correct 18 ms 14456 KB Output is correct
20 Correct 19 ms 15168 KB Output is correct
21 Correct 18 ms 15324 KB Output is correct
22 Correct 22 ms 15224 KB Output is correct
23 Correct 19 ms 14712 KB Output is correct
24 Correct 20 ms 14972 KB Output is correct
25 Correct 15 ms 14456 KB Output is correct
26 Correct 392 ms 37564 KB Output is correct
27 Correct 358 ms 37624 KB Output is correct
28 Correct 347 ms 37620 KB Output is correct
29 Correct 376 ms 37600 KB Output is correct
30 Correct 384 ms 37556 KB Output is correct
31 Correct 386 ms 37644 KB Output is correct
32 Correct 382 ms 37652 KB Output is correct
33 Correct 358 ms 37628 KB Output is correct
34 Correct 371 ms 37564 KB Output is correct
35 Correct 360 ms 37700 KB Output is correct
36 Correct 374 ms 38284 KB Output is correct
37 Correct 359 ms 38268 KB Output is correct
38 Correct 384 ms 38320 KB Output is correct
39 Correct 357 ms 38264 KB Output is correct
40 Correct 377 ms 38304 KB Output is correct
41 Correct 378 ms 44036 KB Output is correct
42 Correct 383 ms 45436 KB Output is correct
43 Correct 376 ms 42952 KB Output is correct
44 Correct 403 ms 44152 KB Output is correct
45 Correct 370 ms 42964 KB Output is correct
46 Correct 366 ms 40696 KB Output is correct
47 Correct 374 ms 52128 KB Output is correct
48 Correct 474 ms 57100 KB Output is correct
49 Correct 380 ms 40952 KB Output is correct
50 Correct 365 ms 54812 KB Output is correct
51 Correct 194 ms 69880 KB Output is correct
52 Correct 189 ms 69936 KB Output is correct
53 Correct 189 ms 69904 KB Output is correct
54 Correct 189 ms 69960 KB Output is correct
55 Correct 185 ms 69956 KB Output is correct
56 Correct 186 ms 69976 KB Output is correct
57 Correct 181 ms 69948 KB Output is correct
58 Correct 182 ms 69892 KB Output is correct
59 Correct 181 ms 70064 KB Output is correct
60 Correct 181 ms 69992 KB Output is correct
61 Correct 201 ms 61476 KB Output is correct
62 Correct 204 ms 61556 KB Output is correct
63 Correct 197 ms 61520 KB Output is correct
64 Correct 203 ms 61656 KB Output is correct
65 Correct 200 ms 61560 KB Output is correct
66 Correct 202 ms 52976 KB Output is correct
67 Correct 241 ms 53060 KB Output is correct
68 Correct 208 ms 53088 KB Output is correct
69 Correct 209 ms 52952 KB Output is correct
70 Correct 227 ms 53132 KB Output is correct
71 Correct 466 ms 67996 KB Output is correct
72 Correct 477 ms 65872 KB Output is correct
73 Correct 467 ms 64876 KB Output is correct
74 Correct 516 ms 67120 KB Output is correct
75 Correct 443 ms 63404 KB Output is correct
76 Correct 426 ms 62872 KB Output is correct
77 Correct 445 ms 57224 KB Output is correct
78 Correct 442 ms 56628 KB Output is correct
79 Correct 444 ms 67656 KB Output is correct
80 Correct 436 ms 62668 KB Output is correct
81 Correct 430 ms 58912 KB Output is correct
82 Correct 571 ms 67620 KB Output is correct
83 Correct 455 ms 67708 KB Output is correct
84 Correct 485 ms 65932 KB Output is correct
85 Correct 429 ms 66960 KB Output is correct
86 Correct 341 ms 56304 KB Output is correct
87 Correct 323 ms 55496 KB Output is correct
88 Correct 204 ms 34136 KB Output is correct
89 Correct 216 ms 34572 KB Output is correct
90 Correct 244 ms 34484 KB Output is correct