Submission #1173391

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1173391	2025-03-25 07:50:22	duonggsimp	Railway (BOI17_railway)	C++20	0 / 100	3 ms	2632 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> ii;
typedef pair<ll, ii> iii;
#define pb push_back
#define fi first
#define se second
#define endl '\n'
#define MOD 1000000000
#define MASK(i) (1ll << (i))
#define BIT(x, i) (((x) >> (i)) & 1)
ll n,m,k;
ll cnt;
ll c[100005];
ll h[100005];
ll f[100005];
ll tin[100005];
ll par[100005][20];
vector <ll> a[100005];
vector <ll> res;
map <ii,ll> mp;
void dfs(ll x,ll p){
  tin[x] = ++cnt;
  for (ll i : a[x]){
    if (i == p) continue;
    h[i] = h[x] + 1;
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:78:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |   freopen("test.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
railway.cpp:79:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |   freopen("test.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 15
• Subtask 3: 0 / 7
• Subtask 4: 0 / 29
• Subtask 5: 0 / 16
• Subtask 6: 0 / 25