Submission #1076217

#	Time	Username	Problem	Language	Result	Execution time	Memory
1076217		GrindMachine	Petrol stations (CEOI24_stations)	C++17	0 / 100	3585 ms	21184 KiB

Main

#include <bits/stdc++.h>
using namespace std;

typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define conts continue
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sz(a) (int)a.size()

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i) 
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &x, T y){
    x = min(x,y);
}

template<typename T>
void amax(T &x, T y){
    x = max(x,y);
}

template<typename A,typename B>
string to_string(pair<A,B> p);

string to_string(const string &s){
    return "'"+s+"'";
}

string to_string(const char *s){
    return to_string((string)s);
}

string to_string(bool b){
    return b?"true":"false";
}

template<typename A>
string to_string(A v){
    string res = "{";
    trav(x,v){
        res += to_string(x)+",";
    }
    if(res.back() == ',') res.pop_back();
    res += "}";
    return res;
}

template<typename A,typename B>
string to_string(pair<A,B> p){
    return "("+to_string(p.ff)+","+to_string(p.ss)+")";
}

#define debug(x) cout << #x << " = "; cout << to_string(x) << endl

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = 1e9 + 5;
const ll inf2 = (ll)1e18 + 5;
const int K = 15;

vector<pll> adj[N];
ll dp1[N][K], dp2[N][K];

void solve(int test_case){
    ll n,k; cin >> n >> k;
    rep(i,n-1){
        ll u,v,w; cin >> u >> v >> w;
        adj[u].pb({v,w}), adj[v].pb({u,w});
    }

    vector<ll> ans(n);
    vector<ll> subsiz(n);

    auto dfs1 = [&](ll u, ll p, auto &&dfs1) -> void{
        subsiz[u] = 1;
        rep(j,k+1) dp1[u][j] = 0;
        dp1[u][k] = 1;
        for(auto [v,w] : adj[u]){
            if(v == p) conts;
            dfs1(v,u,dfs1);
            subsiz[u] += subsiz[v];
            rep(j,k+1){
                if(j >= w){
                    dp1[u][j-w] += dp1[v][j];
                }
                else{
                    dp1[u][k-w] += dp1[v][j];
                }
            }
        }
    };

    rep(u,n){
        dfs1(u,-1,dfs1);
        for(auto [v,w] : adj[u]){
            rep(j,k+1){
                if(j >= w){
                    dp1[u][j-w] -= dp1[v][j];
                }
                else{
                    dp1[u][k-w] -= dp1[v][j];
                }
            }

            ll sum = 0;
            rep(j,w){
                sum += dp1[u][j];
            }

            ans[u] += sum*subsiz[v];

            rep(j,k+1){
                if(j >= w){
                    dp1[u][j-w] += dp1[v][j];
                }
                else{
                    dp1[u][k-w] += dp1[v][j];
                }
            }
        }
    }

    rep(i,n) cout << ans[i] << endl;
}

int main(){
    int t = 1;
    // cin >> t;

    rep1(i,t){
        solve(i);
    }

    return 0;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 18
• Subtask 2: 0 / 8
• Subtask 3: 0 / 10
• Subtask 4: 0 / 12
• Subtask 5: 0 / 17
• Subtask 6: 0 / 35