Submission #1178475

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178475		Tymond	Election Campaign (JOI15_election_campaign)	C++20	Compilation error	0 ms	0 KiB

election_campaign

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::high_resolution_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

struct pair_hash{
  size_t operator()(const pair<int,int>&x)const{
    return hash<long long>()(((long long)x.first)^(((long long)x.second)<<32));
  }
};

const int MAXN = 1e5 + 7;
const int MAXK = 18;
const int B = 369;
int dep[MAXN];
int jump[MAXK][MAXN];
ll dp[MAXN];
int bigJump[MAXN];
int parent[MAXN];
ll sumOnBigJump[MAXN];
ll sumOfChild[MAXN];
ll dp[MAXN];
vi g[MAXN];
vector<pair<pii, int>> vec[MAXN];
int n, m;

void dfs(int v, int p, int d){
    dep[v] = d;
    parent[v] = p;
    for(auto u : g[v]){
        if(u != p){
            dfs(u, v, d + 1);
        }
    }
}

void init(){
    dfs(1, 1, 0);
    for(int i = 1; i <= n; i++){
        int L = B;
        int x = i;
        while(L){
            x = parent[x];
            L--;
        }
        bigJump[i] = x;
        jump[0][i] = parent[i];
    }
    
    for(int j = 1; j < MAXK; j++){
        for(int i = 1; i <= n; i++){
            jump[j][i] = jumo[j - 1][jump[j - 1][i]];
        }
    }
}

int lca(int u, int v){
    if(dep[u] > dep[v]){
        swap(u, v);
    }
    
    for(int j = MAXK - 1; j >= 0; j--){
        if(dep[v] - (1 << j) >= dep[u]){
            v = jump[j][v];
        }
    }
    
    if(u == v){
        return u;
    }
    
    for(int j = MAXK - 1; j >= 0; j--){
        if(jump[j][u] != jump[j][v]){
            u = jump[j][u];
            v = jump[j][v];
        }
    }
    return parent[v];
}

void add(int a, int b, int c){
    if(dep[a] < dep[b]){
        swap(a, b);
    }
    
    int x = lca(a, b);
    if(x == b){
        vec[x].pb(mp(mp(a, -1), c));
    }else{
        vec[x].pb(mp(mp(a, b), c));
    }
}

void updDp(int v){
    if(v == 1){
        return;
    }
    sumOfChild[parent[v]] += dp[v];
    
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    
    cin >> n;
    for(int i = 1; i < n; i++){
        int a, b;
        cin >> a >> b;
        g[a].pb(b);
        g[b].pb(a);
    }
    init();
    for(int i = 1; i <= m; i++){
        int a, b, c;
        cin >> a >> b >> c;
        add(a, b, c);
    }
    
    solve(1, 1);
    cout << dp[1] << '\n';
    
    return 0;
}

Compilation message (stderr)

election_campaign.cpp:58:4: error: redefinition of 'll dp [100007]'
   58 | ll dp[MAXN];
      |    ^~
election_campaign.cpp:53:4: note: 'll dp [100007]' previously declared here
   53 | ll dp[MAXN];
      |    ^~
election_campaign.cpp: In function 'void init()':
election_campaign.cpp:88:26: error: 'jumo' was not declared in this scope; did you mean 'jump'?
   88 |             jump[j][i] = jumo[j - 1][jump[j - 1][i]];
      |                          ^~~~
      |                          jump
election_campaign.cpp: In function 'int main()':
election_campaign.cpp:157:5: error: 'solve' was not declared in this scope
  157 |     solve(1, 1);
      |     ^~~~~