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### 11655 - Waterland

Posted: Sat May 31, 2014 6:05 pm
In case you are wondering for more input :

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``````1
5 7
1 2
1 3
3 2
3 4
2 5
2 4
4 5``````
Output :

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``Case 1: 15 5``

### Re: 11655 - Waterland

Posted: Sun Sep 28, 2014 8:38 am
Why is this WA? Could it be that ull is not enough to contain the answer?

Code: Select all

``````#include <cstdio>
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vii;
typedef unsigned long long ull;

vector<bool> marked;
vector<ull> nodeCnt;
vector<ull> pathCnt;

int NUM_EDGES;
int NUM_NODES;
ull visit(int i, ull * numNodes){
//printf("Visiting %d\n", i+1);
if(marked[i]){
*numNodes += nodeCnt[i];
return pathCnt[i];
}
if(i == NUM_NODES-1){
marked[i] = true;
nodeCnt[i] = 1;
*numNodes += nodeCnt[i];
return pathCnt[i] = 1;
}
ull totalPaths = 0;
ull localNodeCnt = 0;
if(!i){
localNodeCnt = 0;
}
for(int x = 0; x<numAdj; x++){
}
if(i){
localNodeCnt += totalPaths;
}

marked[i] = true;
if(totalPaths){ // Valid route, not a route that doesn't reach goal

} else {
localNodeCnt = 0; // Else don't count this node
}
nodeCnt[i] = localNodeCnt;
*numNodes += nodeCnt[i];
return pathCnt[i] = totalPaths;

}

int main(){
int cases;
scanf("%d", &cases);

for(int e = 0; e<cases; e++){
int numNodes, numEdges;
scanf("%d %d", &numNodes, &numEdges);
NUM_EDGES = numEdges;
NUM_NODES = numNodes;
marked.assign(numNodes, false);
nodeCnt.assign(numNodes, 0);
pathCnt.assign(numNodes, 0);

for(int x = 0; x<numEdges; x++){
int a, b;
scanf("%d %d", &a,&b);
a--;
b--;
}

ull numTeams = 0; // Number of nodes visited, with repeats
ull numGroups = 0; // Number of routes/paths
numGroups = visit(0, &numTeams);

// Debug
/*for(int x = 0; x<numNodes; x++){
if(marked[x]){
printf("%llu ", nodeCnt[x]);
} else {
printf(". ");
}
}*/

printf("Case %d: %llu %llu\n", e+1, numTeams%1000000, numGroups%1000000);

}

return 0;
}
``````

### Re: 11655 - Waterland

Posted: Tue Sep 30, 2014 2:43 am
Yes it looks like your issue is overflow. Try input:

Code: Select all

``````1
50 1225
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
4 16
4 17
4 18
4 19
4 20
4 21
4 22
4 23
4 24
4 25
4 26
4 27
4 28
4 29
4 30
4 31
4 32
4 33
4 34
4 35
4 36
4 37
4 38
4 39
4 40
4 41
4 42
4 43
4 44
4 45
4 46
4 47
4 48
4 49
4 50
5 6
5 7
5 8
5 9
5 10
5 11
5 12
5 13
5 14
5 15
5 16
5 17
5 18
5 19
5 20
5 21
5 22
5 23
5 24
5 25
5 26
5 27
5 28
5 29
5 30
5 31
5 32
5 33
5 34
5 35
5 36
5 37
5 38
5 39
5 40
5 41
5 42
5 43
5 44
5 45
5 46
5 47
5 48
5 49
5 50
6 7
6 8
6 9
6 10
6 11
6 12
6 13
6 14
6 15
6 16
6 17
6 18
6 19
6 20
6 21
6 22
6 23
6 24
6 25
6 26
6 27
6 28
6 29
6 30
6 31
6 32
6 33
6 34
6 35
6 36
6 37
6 38
6 39
6 40
6 41
6 42
6 43
6 44
6 45
6 46
6 47
6 48
6 49
6 50
7 8
7 9
7 10
7 11
7 12
7 13
7 14
7 15
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7 17
7 18
7 19
7 20
7 21
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7 46
7 47
7 48
7 49
7 50
8 9
8 10
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9 10
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9 50
10 11
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10 48
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10 50
11 12
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11 20
11 21
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11 24
11 25
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11 35
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11 40
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11 42
11 43
11 44
11 45
11 46
11 47
11 48
11 49
11 50
12 13
12 14
12 15
12 16
12 17
12 18
12 19
12 20
12 21
12 22
12 23
12 24
12 25
12 26
12 27
12 28
12 29
12 30
12 31
12 32
12 33
12 34
12 35
12 36
12 37
12 38
12 39
12 40
12 41
12 42
12 43
12 44
12 45
12 46
12 47
12 48
12 49
12 50
13 14
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13 17
13 18
13 19
13 20
13 21
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13 23
13 24
13 25
13 26
13 27
13 28
13 29
13 30
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13 32
13 33
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13 35
13 36
13 37
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13 39
13 40
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13 42
13 43
13 44
13 45
13 46
13 47
13 48
13 49
13 50
14 15
14 16
14 17
14 18
14 19
14 20
14 21
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14 24
14 25
14 26
14 27
14 28
14 29
14 30
14 31
14 32
14 33
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14 35
14 36
14 37
14 38
14 39
14 40
14 41
14 42
14 43
14 44
14 45
14 46
14 47
14 48
14 49
14 50
15 16
15 17
15 18
15 19
15 20
15 21
15 22
15 23
15 24
15 25
15 26
15 27
15 28
15 29
15 30
15 31
15 32
15 33
15 34
15 35
15 36
15 37
15 38
15 39
15 40
15 41
15 42
15 43
15 44
15 45
15 46
15 47
15 48
15 49
15 50
16 17
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16 50
17 18
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18 19
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18 47
18 48
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18 50
19 20
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19 35
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19 50
20 21
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25 26
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26 27
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27 28
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27 50
28 29
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28 45
28 46
28 47
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29 30
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29 37
29 38
29 39
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29 46
29 47
29 48
29 49
29 50
30 31
30 32
30 33
30 34
30 35
30 36
30 37
30 38
30 39
30 40
30 41
30 42
30 43
30 44
30 45
30 46
30 47
30 48
30 49
30 50
31 32
31 33
31 34
31 35
31 36
31 37
31 38
31 39
31 40
31 41
31 42
31 43
31 44
31 45
31 46
31 47
31 48
31 49
31 50
32 33
32 34
32 35
32 36
32 37
32 38
32 39
32 40
32 41
32 42
32 43
32 44
32 45
32 46
32 47
32 48
32 49
32 50
33 34
33 35
33 36
33 37
33 38
33 39
33 40
33 41
33 42
33 43
33 44
33 45
33 46
33 47
33 48
33 49
33 50
34 35
34 36
34 37
34 38
34 39
34 40
34 41
34 42
34 43
34 44
34 45
34 46
34 47
34 48
34 49
34 50
35 36
35 37
35 38
35 39
35 40
35 41
35 42
35 43
35 44
35 45
35 46
35 47
35 48
35 49
35 50
36 37
36 38
36 39
36 40
36 41
36 42
36 43
36 44
36 45
36 46
36 47
36 48
36 49
36 50
37 38
37 39
37 40
37 41
37 42
37 43
37 44
37 45
37 46
37 47
37 48
37 49
37 50
38 39
38 40
38 41
38 42
38 43
38 44
38 45
38 46
38 47
38 48
38 49
38 50
39 40
39 41
39 42
39 43
39 44
39 45
39 46
39 47
39 48
39 49
39 50
40 41
40 42
40 43
40 44
40 45
40 46
40 47
40 48
40 49
40 50
41 42
41 43
41 44
41 45
41 46
41 47
41 48
41 49
41 50
42 43
42 44
42 45
42 46
42 47
42 48
42 49
42 50
43 44
43 45
43 46
43 47
43 48
43 49
43 50
44 45
44 46
44 47
44 48
44 49
44 50
45 46
45 47
45 48
45 49
45 50
46 47
46 48
46 49
46 50
47 48
47 49
47 50
48 49
48 50
49 50
``````
AC output:

Code: Select all

``````Case 1: 66400 10656
``````
You should rewrite your code so that all computations are performed mod 100000

### Re: 11655 - Waterland

Posted: Wed Oct 01, 2014 1:07 pm
Got it, thanks.