#include "bits/stdc++.h"
#include "speedrun.h"
using namespace std;
// #define ORD_SET
// #define ROPE
#ifdef ORD_SET
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#endif
#ifdef ROPE
#include <ext/rope>
using namespace __gnu_cxx;
#endif
// #pragma comment(linker, "/stack:200000000")
// #pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
using ll = long long;
using ld = long double;
#define pb push_back
#define ff first
#define ss second
#define sz(x) (ll)(x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
void ioigold2024insh() { ios_base::sync_with_stdio(false); cin.tie(NULL); }
void pre(ll a) { cout<<fixed<<setprecision(a); }
ll bit(ll a) { return __builtin_popcountll(a); }
ll binmul(ll a, ll b, ll c) { ll res = 0; while(b) { if(b&1) (res += a) %= c; (a += a) %= c; b >>= 1; } return res; }
ll binpow(ll a, ll b, ll c) { ll res = 1; while(b) { if(b&1) (res *= a) %= c; (a *= a) %= c; b >>= 1; } return res; }
template<typename T> T gcd(T a, T b) { if(b==0) return a; return gcd(b, a%b); }
template<typename T> T lcm(T a, T b) { return a/gcd(a, b)*b; }
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ld rnd() { return rng()%INT_MAX*1.0/INT_MAX; }
struct sn { ll l, r, x; };
const ll mod = 1e9+7, inf = 1e18+7, MX = LLONG_MAX, MN = LLONG_MIN;
const ll N = 3e5+5;
ll used[1005];
void assignHints(int subtask, int N, int A[], int B[]) {
setHintLen(N);
for(ll i=1; i<N; i++) setHint(A[i], B[i], 1), setHint(B[i], A[i], 1);
}
void dfs(ll v, ll N) {
used[v] = 1;
for(auto to: g[v]) {
if(used[to]) continue;
ll x = getHint(to);
if(x) {
goTo(x);
dfs(to, v);
goTo(v);
}
}
}
void speedrun(int subtask, int N, int start) {
dfs(start, N);
}
Compilation message
speedrun.cpp: In function 'void dfs(ll, ll)':
speedrun.cpp:55:18: error: 'g' was not declared in this scope
55 | for(auto to: g[v]) {
| ^
speedrun.cpp: In function 'void freopen(std::string)':
speedrun.cpp:32:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
32 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
speedrun.cpp:32:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
32 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
