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Submission #368507

# Submission time Handle Problem Language Result Execution time Memory
368507 2021-02-20T04:53:09 Z 1306439119 Traffic (IOI10_traffic) C++11
50 / 100
 1650 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pi pair<int, int>
#define endl '\n'

void setIO(string name = "") { 
    ios_base::sync_with_stdio(0); 
	cin.tie(0);     
    if (name.length()) {
        freopen((name+".in").c_str(), "r", stdin); 
        freopen((name+".out").c_str(), "w", stdout);
    }
}

struct node{
    int id, person;
    vector<node*> adj;
    node(int i, int p, vector<node*> a){
        id = i;
        person = p;
        adj = a;
    }
};

int n;
node* A[1000000];
map<pi, int> memo;

int dfs(node* curr, int prev){
    if(memo.find({prev, curr->id}) != memo.end()){
        return memo[{prev, curr->id}];
    }

    int sum = curr->person;
    for(node* next : curr->adj){
        if(prev != next->id){            
            sum += dfs(next, curr->id);
        }
    }

    memo[{prev, curr->id}] = sum;    
    return sum;
}

int root(node* root){    
    int ret = 0;    
    for(node* next : root->adj){        
        ret = max(ret, dfs(next, root->id));
    }
    return ret;
}

int LocateCentre(int n, int* p, int* s, int* d){
    for(int i = 0; i < n; i++){        
        A[i] = new node(i, p[i], vector<node*>());        
    }
    for(int i = 0; i < n-1; i++){        
        A[s[i]]->adj.push_back(A[d[i]]);
        A[d[i]]->adj.push_back(A[s[i]]);
    }        

    int res = INT_MAX, ret = -1;
    for(int i = 0; i < n; i++){        
        int curr = root(A[i]);        
        if(curr < res){            
            res = curr;
            ret = A[i]->id;
        }
    }

    return ret;
}

/*int main(){			 
    setIO("");               
    int* p = new int[5]; 
    int* s = new int[4]; 
    int* d = new int[4];
    p[0] = 10, p[1] = 10, p[2] = 10, p[3] = 20, p[4] = 20;
    s[0] = 0, s[1] = 1, s[2] = 2, s[3] = 3;
    d[0] = 2, d[1] = 2, d[2] = 3, d[3] = 4;    
    cout << LocateCentre(5, p, s, d) << endl;;

    return 0;
}*/

Compilation message

traffic.cpp: In function 'void setIO(std::string)':
traffic.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   12 |         freopen((name+".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
traffic.cpp:13:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   13 |         freopen((name+".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 396 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 492 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 620 KB Output is correct
38 Correct 2 ms 620 KB Output is correct
39 Correct 2 ms 620 KB Output is correct
40 Correct 2 ms 620 KB Output is correct
41 Correct 3 ms 768 KB Output is correct
42 Correct 3 ms 620 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 396 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 492 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 620 KB Output is correct
38 Correct 2 ms 620 KB Output is correct
39 Correct 2 ms 620 KB Output is correct
40 Correct 2 ms 620 KB Output is correct
41 Correct 3 ms 768 KB Output is correct
42 Correct 3 ms 620 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 364 KB Output is correct
54 Correct 0 ms 364 KB Output is correct
55 Correct 1 ms 364 KB Output is correct
56 Correct 1 ms 364 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Correct 1 ms 512 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 1 ms 512 KB Output is correct
68 Correct 95 ms 16256 KB Output is correct
69 Correct 226 ms 32012 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 325 ms 47852 KB Output is correct
72 Correct 344 ms 63784 KB Output is correct
73 Correct 439 ms 79596 KB Output is correct
74 Correct 504 ms 95436 KB Output is correct
75 Correct 652 ms 111500 KB Output is correct
76 Correct 689 ms 127212 KB Output is correct
77 Correct 817 ms 143084 KB Output is correct
78 Correct 879 ms 158920 KB Output is correct
79 Correct 1004 ms 174788 KB Output is correct
80 Correct 1247 ms 190604 KB Output is correct
81 Correct 1 ms 364 KB Output is correct
82 Correct 1271 ms 206444 KB Output is correct
83 Correct 1272 ms 222432 KB Output is correct
84 Correct 1650 ms 239184 KB Output is correct
85 Correct 1557 ms 262144 KB Output is correct
86 Runtime error 1533 ms 262148 KB Execution killed with signal 9
87 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 396 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 492 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 620 KB Output is correct
38 Correct 2 ms 620 KB Output is correct
39 Correct 2 ms 620 KB Output is correct
40 Correct 2 ms 620 KB Output is correct
41 Correct 3 ms 768 KB Output is correct
42 Correct 3 ms 620 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 512 KB Output is correct
54 Correct 1 ms 364 KB Output is correct
55 Correct 1 ms 364 KB Output is correct
56 Correct 1 ms 364 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 0 ms 364 KB Output is correct
64 Correct 1 ms 492 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 1 ms 364 KB Output is correct
68 Correct 1 ms 364 KB Output is correct
69 Correct 1 ms 364 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Correct 1 ms 364 KB Output is correct
73 Correct 1 ms 364 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 1 ms 364 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 1 ms 640 KB Output is correct
80 Correct 1 ms 492 KB Output is correct
81 Correct 1 ms 364 KB Output is correct
82 Correct 2 ms 640 KB Output is correct
83 Correct 2 ms 492 KB Output is correct
84 Correct 2 ms 640 KB Output is correct
85 Correct 2 ms 492 KB Output is correct
86 Correct 2 ms 492 KB Output is correct
87 Correct 3 ms 492 KB Output is correct
88 Correct 3 ms 492 KB Output is correct
89 Correct 3 ms 492 KB Output is correct
90 Correct 2 ms 492 KB Output is correct
91 Correct 3 ms 768 KB Output is correct
92 Correct 1 ms 384 KB Output is correct
93 Correct 3 ms 768 KB Output is correct
94 Correct 1 ms 492 KB Output is correct
95 Correct 2 ms 620 KB Output is correct
96 Correct 1 ms 364 KB Output is correct
97 Correct 1 ms 512 KB Output is correct
98 Correct 1 ms 364 KB Output is correct
99 Correct 1 ms 364 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 396 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 492 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 620 KB Output is correct
38 Correct 2 ms 620 KB Output is correct
39 Correct 2 ms 620 KB Output is correct
40 Correct 2 ms 620 KB Output is correct
41 Correct 3 ms 768 KB Output is correct
42 Correct 3 ms 620 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 364 KB Output is correct
54 Correct 0 ms 364 KB Output is correct
55 Correct 1 ms 364 KB Output is correct
56 Correct 1 ms 364 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Correct 1 ms 512 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 1 ms 512 KB Output is correct
68 Correct 95 ms 16256 KB Output is correct
69 Correct 226 ms 32012 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 325 ms 47852 KB Output is correct
72 Correct 344 ms 63784 KB Output is correct
73 Correct 439 ms 79596 KB Output is correct
74 Correct 504 ms 95436 KB Output is correct
75 Correct 652 ms 111500 KB Output is correct
76 Correct 689 ms 127212 KB Output is correct
77 Correct 817 ms 143084 KB Output is correct
78 Correct 879 ms 158920 KB Output is correct
79 Correct 1004 ms 174788 KB Output is correct
80 Correct 1247 ms 190604 KB Output is correct
81 Correct 1 ms 364 KB Output is correct
82 Correct 1271 ms 206444 KB Output is correct
83 Correct 1272 ms 222432 KB Output is correct
84 Correct 1650 ms 239184 KB Output is correct
85 Correct 1557 ms 262144 KB Output is correct
86 Runtime error 1533 ms 262148 KB Execution killed with signal 9
87 Halted 0 ms 0 KB -