Submission #379017

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
379017	2021-03-17 08:27:36	jeroenodb	Railway (BOI17_railway)	C++14	100 / 100	123 ms	30052 KiB

railway

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#include "bits/stdc++.h"
using namespace std;
#define all(x) begin(x),end(x)
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { string sep; for (const T &x : v) os << sep << x, sep = " "; return os; }
#define debug(a) cerr << "(" << #a << ": " << a << ")\n";
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pi;
const int mxN = 1e5+1, oo = 1e9;
int pref[mxN], in[mxN];
struct DSU{
    vi sz,parent, highest;
    DSU(int n) {
        sz.assign(n,1);
        parent.resize(n);
        iota(all(parent),0);
        highest.resize(n);
        iota(all(highest),0);
    }
    void link(int a, int b) {
        if(sz[a]<sz[b]) {
            swap(a,b);
        }
        sz[a] = max(sz[a],sz[b]+1);
        parent[b] = a;
        if(in[highest[a]]>in[highest[b]]) {
 
 
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Compilation message (stderr)

railway.cpp: In function 'void dfs(int, int)':
railway.cpp:50:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   50 |     for(auto [to,haha]: adj[at]) {
      |              ^
railway.cpp: In function 'void lcadfs(int, int, DSU&)':
railway.cpp:74:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   74 |     for(auto [to,id]: adj[at]) {
      |              ^

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