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Submission #587494

# Submission time Handle Problem Language Result Execution time Memory
587494 2022-07-02T01:43:57 Z gg123_pe Hotspot (NOI17_hotspot) C++14
100 / 100
 1615 ms 338000 KB 
#include <bits/stdc++.h>
using namespace std; 
 
typedef long long ll; 
typedef long double ld; 

#define f(i,a,b) for(ll i = a; i < b; i++)
#define fa(i,a,b) for(ll i = a; i >= b; i--)

const int N = 5005; 
const int inf = 2e9; 


int a[N], b[N], n, m, d[N][N]; 
ld c[N][N]; 
vector <int> adj[N];

void dfs(int u){
    f(i,1,n+1) d[u][i] = inf; 

    d[u][u] = 0; 
    queue <int> q; 
    q.push(u); 

    c[u][u] = 1; 

    while(!q.empty()){
        int v = q.front(); q.pop();

        for(int f: adj[v]){
            if(d[u][f] > d[u][v] + 1){
                d[u][f] = d[u][v] + 1; 
                c[u][f] = c[u][v];
                q.push(f);
            }
            else if(d[u][f] == d[u][v] + 1) c[u][f] += c[u][v]; 
        }
    }
}
int main(){
    cin >> n >> m; 

    f(i,0,m){
        int x, y; cin >> x >> y; 
        x++, y++; 
        adj[x].push_back(y), adj[y].push_back(x);
    }

    f(i,1,n+1) dfs(i); 

    int k, ans = 0; cin >> k; 
    f(i,1,k+1) {
        cin >> a[i] >> b[i]; 
        a[i]++, b[i]++; 
    }

    ld ANS = 0; 

    f(i,1,n+1){
        ld res = 0; 

        f(j,1,k+1){
            if(d[a[j]][b[j]] == d[a[j]][i] + d[i][b[j]]){
                res += (c[a[j]][i]*c[i][b[j]]) / c[a[j]][b[j]];
            }
        }
        if(res > ANS){
            ANS = res; 
            ans = i; 
        }
    }
    cout << --ans << "\n";
    return 0; 
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct
8 Correct 5 ms 3668 KB Output is correct
9 Correct 13 ms 10388 KB Output is correct
10 Correct 25 ms 20340 KB Output is correct
11 Correct 1 ms 1444 KB Output is correct
12 Correct 1 ms 676 KB Output is correct
13 Correct 6 ms 5076 KB Output is correct
14 Correct 14 ms 12700 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct
8 Correct 6 ms 5332 KB Output is correct
9 Correct 15 ms 12876 KB Output is correct
10 Correct 13 ms 10844 KB Output is correct
11 Correct 21 ms 20928 KB Output is correct
12 Correct 2 ms 1620 KB Output is correct
13 Correct 1 ms 852 KB Output is correct
14 Correct 6 ms 5444 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct
8 Correct 5 ms 3668 KB Output is correct
9 Correct 13 ms 10388 KB Output is correct
10 Correct 25 ms 20340 KB Output is correct
11 Correct 1 ms 1444 KB Output is correct
12 Correct 1 ms 676 KB Output is correct
13 Correct 6 ms 5076 KB Output is correct
14 Correct 14 ms 12700 KB Output is correct
15 Correct 6 ms 5332 KB Output is correct
16 Correct 15 ms 12876 KB Output is correct
17 Correct 13 ms 10844 KB Output is correct
18 Correct 21 ms 20928 KB Output is correct
19 Correct 2 ms 1620 KB Output is correct
20 Correct 1 ms 852 KB Output is correct
21 Correct 6 ms 5444 KB Output is correct
22 Correct 7 ms 7124 KB Output is correct
23 Correct 6 ms 5544 KB Output is correct
24 Correct 16 ms 13428 KB Output is correct
25 Correct 35 ms 24476 KB Output is correct
26 Correct 31 ms 21580 KB Output is correct
27 Correct 2 ms 1836 KB Output is correct
28 Correct 8 ms 7340 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct
8 Correct 5 ms 3668 KB Output is correct
9 Correct 13 ms 10388 KB Output is correct
10 Correct 25 ms 20340 KB Output is correct
11 Correct 1 ms 1444 KB Output is correct
12 Correct 1 ms 676 KB Output is correct
13 Correct 6 ms 5076 KB Output is correct
14 Correct 14 ms 12700 KB Output is correct
15 Correct 18 ms 2180 KB Output is correct
16 Correct 18 ms 7556 KB Output is correct
17 Correct 77 ms 16352 KB Output is correct
18 Correct 44 ms 14004 KB Output is correct
19 Correct 80 ms 25164 KB Output is correct
20 Correct 12 ms 3188 KB Output is correct
21 Correct 4 ms 2132 KB Output is correct

Subtask #6
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9940 KB Output is correct
2 Correct 21 ms 19640 KB Output is correct
3 Correct 19 ms 17068 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 5 ms 4756 KB Output is correct
6 Correct 3 ms 3540 KB Output is correct
7 Correct 10 ms 10196 KB Output is correct
8 Correct 5 ms 3668 KB Output is correct
9 Correct 13 ms 10388 KB Output is correct
10 Correct 25 ms 20340 KB Output is correct
11 Correct 1 ms 1444 KB Output is correct
12 Correct 1 ms 676 KB Output is correct
13 Correct 6 ms 5076 KB Output is correct
14 Correct 14 ms 12700 KB Output is correct
15 Correct 6 ms 5332 KB Output is correct
16 Correct 15 ms 12876 KB Output is correct
17 Correct 13 ms 10844 KB Output is correct
18 Correct 21 ms 20928 KB Output is correct
19 Correct 2 ms 1620 KB Output is correct
20 Correct 1 ms 852 KB Output is correct
21 Correct 6 ms 5444 KB Output is correct
22 Correct 7 ms 7124 KB Output is correct
23 Correct 6 ms 5544 KB Output is correct
24 Correct 16 ms 13428 KB Output is correct
25 Correct 35 ms 24476 KB Output is correct
26 Correct 31 ms 21580 KB Output is correct
27 Correct 2 ms 1836 KB Output is correct
28 Correct 8 ms 7340 KB Output is correct
29 Correct 18 ms 2180 KB Output is correct
30 Correct 18 ms 7556 KB Output is correct
31 Correct 77 ms 16352 KB Output is correct
32 Correct 44 ms 14004 KB Output is correct
33 Correct 80 ms 25164 KB Output is correct
34 Correct 12 ms 3188 KB Output is correct
35 Correct 4 ms 2132 KB Output is correct
36 Correct 38 ms 3492 KB Output is correct
37 Correct 195 ms 36496 KB Output is correct
38 Correct 1542 ms 261072 KB Output is correct
39 Correct 176 ms 17512 KB Output is correct
40 Correct 597 ms 202988 KB Output is correct
41 Correct 1615 ms 338000 KB Output is correct
42 Correct 378 ms 40956 KB Output is correct
43 Correct 262 ms 95276 KB Output is correct
44 Correct 287 ms 95184 KB Output is correct