/*
* @Author: hungeazy
* @Date: 2024-10-16 13:45:49
* @Last Modified by: hungeazy
* @Last Modified time: 2024-10-16 13:57:05
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
using namespace std;
using namespace __gnu_pbds;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define int long long
#define ll long long
#define ull unsigned long long
#define sz(x) x.size()
#define sqr(x) (1LL * (x) * (x))
#define all(x) x.begin(), x.end()
#define fill(f,x) memset(f,x,sizeof(f))
#define FOR(i,l,r) for(int i=l;i<=r;i++)
#define FOD(i,r,l) for(int i=r;i>=l;i--)
#define debug(x) cout << #x << " = " << x << '\n'
#define ii pair<int,int>
#define iii pair<int,ii>
#define di pair<ii,ii>
#define vi vector<int>
#define vii vector<ii>
#define mii map<int,int>
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define fi first
#define se second
#define pb push_back
#define MOD 1000000007
#define __lcm(a,b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define YES cout << "YES\n"
#define NO cout << "NO\n"
#define MASK(i) (1LL << (i))
#define c_bit(i) __builtin_popcountll(i)
#define BIT(x,i) ((x) & MASK(i))
#define SET_ON(x,i) ((x) | MASK(i))
#define SET_OFF(x,i) ((x) & ~MASK(i))
#define oo 1e18
#define name ""
#define endl '\n'
#define time() cerr << endl << "-------------Time:" << 1000.0 * clock() / CLOCKS_PER_SEC << "ms.";
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
const int N = (int)1e6+10;
vi g[N];
int n,m,k;
namespace sub12 {
int f[N],f2[N],d[N];
bool approved()
{
return n <= 1e3 and m <= 1e3 and k == 1;
}
void Dijkstra(int p, int end, int f[])
{
FOR(i,1,n) d[i] = oo;
d[p] = 0;
queue<int> q;
q.push(p);
maximize(f[p],1LL);
while (!q.empty())
{
int u = q.front();
q.pop();
for (int v : g[u])
if (d[v] > d[u]+1)
{
d[v] = d[u]+1;
f[v] = f[u];
q.push(v);
}
else if (d[v] == d[u]+1) f[v] += f[u];
}
}
void solve(void)
{
int ans = -oo;
while (k--)
{
int a,b;
cin >> a >> b;
FOR(i,1,n)
{
Dijkstra(a,i,f);
Dijkstra(i,b,f);
Dijkstra(a,b,f2);
maximize(ans,f[b]/f2[b]);
}
}
cout << ans;
}
}
signed main()
{
fast;
if (fopen(name".inp","r"))
{
freopen(name".inp","r",stdin);
freopen(name".out","w",stdout);
}
cin >> n >> m;
FOR(i,1,m)
{
int u,v;
cin >> u >> v;
g[u].pb(v); g[v].pb(u);
}
cin >> k;
if (sub12::approved()) sub12::solve();
time();
return 0;
}
// ██░ ██ █ ██ ███▄ █ ▄████
//▓██░ ██▒ ██ ▓██▒ ██ ▀█ █ ██▒ ▀█▒
//▒██▀▀██░▓██ ▒██░▓██ ▀█ ██▒▒██░▄▄▄░
//░▓█ ░██ ▓▓█ ░██░▓██▒ ▐▌██▒░▓█ ██▓
//░▓█▒░██▓▒▒█████▓ ▒██░ ▓██░░▒▓███▀▒
// ▒ ░░▒░▒░▒▓▒ ▒ ▒ ░ ▒░ ▒ ▒ ░▒ ▒
// ▒ ░▒░ ░░░▒░ ░ ░ ░ ░░ ░ ▒░ ░ ░
// ░ ░░ ░ ░░░ ░ ░ ░ ░ ░ ░ ░ ░
// ░ ░ ░ ░ ░ ░
Compilation message
hotspot.cpp: In function 'int main()':
hotspot.cpp:111:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
111 | freopen(name".inp","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
hotspot.cpp:112:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
112 | freopen(name".out","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
24660 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
