Submission #1024213

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1024213	2024-07-15T16:25:00 Z	tien_07	Race (IOI11_race)	C++11	Compilation error	0 ms	0 KB

race

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

#define endl '\n'
#define fi first
#define se second
#define pb push_back
#define all(a) a.begin(),a.end()
#define ms(a,n) memset(a,n,sizeof(a))
#define FOR(i,a,b) for(int i = a; i <= b; i++)
#define FOD(i,a,b) for(int i = a; i >= b; i--)
//Bit
#define MASK(x) (1ll<<(x))
#define BIT(mask, i) (((mask) >> (i))&1)
#define SET_ON(x,i) ((x) | MASK(i))
#define SET_OFF(x,i) ((x) & ~MASK(i))
#define c_bit(i) __builtin_popcountll(i)
#define TASK "test"
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<ll,ll> ii;
typedef pair<int,ii> iii;
typedef pair<ii,ii> iv;
typedef vector<ll> vll;
typedef vector<int> vi;
 
inline ll gcd(ll a, ll b){return b==0 ? a : gcd(b,a%b);}
inline ll lcm(ll a, ll b){return a/gcd(a,b)*b;}
 
const ld PI = 3.141592653589793238462643383279502884L;
const int MOD = 998244353;
const ll LINF = 1e18;
const int INF = 1e9;
const int N = 2e5+5;

int n,k, H[N][2], L[N], ans[N];
vector<ii> g[N];

map<ll,int> mp[N];

void dfs(int u, int p){
    mp[u][0] = 0;
    for(auto &[v,w] : g[u]){
        if(v==p) continue;
        dfs(v,u);

        for(auto &[len, cnt] : mp[v]){
            if(len+w>k) continue;
            if(mp[u].count(k-len-w)) ans[u] = min(ans[u], mp[u][k-len-w] + cnt+1);
        }

        for(auto &[len, cnt] : mp[v]){
            if(len+w>k) continue;
            if(mp[u].count(len+w)) mp[u][len+w] = min(mp[u][len+w], cnt+1);
            else mp[u][len+w] = cnt+1;
        }
    }
}

void solve(){
    cin >> n >> k;
    FOR(i,1,n-1){
        int u,v; cin >> u >> v;
        H[i][0] = ++u; H[i][1] = ++v;
    }
    FOR(i,1,n-1) cin >> L[i];
    FOR(i,1,n-1){
        g[H[i][0]].push_back({H[i][1],L[i]});
        g[H[i][1]].push_back({H[i][0],L[i]});
    }

    FOR(i,1,n) ans[i] = INF;
    dfs(1,-1);

    int tmp = *min_element(ans+1,ans+n+1);
    cout << (tmp==INF ? -1 : tmp);
}

int main(){
    ios_base::sync_with_stdio(false);
    cout.tie(NULL);
    cin.tie(NULL);

    
    int tc = 1; //cin >> tc;
    while(tc--) solve();

    return 0;
}

Compilation message

race.cpp: In function 'void dfs(int, int)':
race.cpp:46:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   46 |     for(auto &[v,w] : g[u]){
      |               ^
race.cpp:50:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   50 |         for(auto &[len, cnt] : mp[v]){
      |                   ^
race.cpp:55:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   55 |         for(auto &[len, cnt] : mp[v]){
      |                   ^
/usr/bin/ld: /tmp/cciDuZuB.o: in function `main':
race.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccZlLjUA.o:grader.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccZlLjUA.o: in function `main':
grader.cpp:(.text.startup+0x28): undefined reference to `best_path(int, int, int (*) [2], int*)'
collect2: error: ld returned 1 exit status