Submission #973446

#	Time	Username	Problem	Language	Result	Execution time	Memory
973446		modwwe	Putovanje (COCI20_putovanje)	C++17	110 / 110	107 ms	50256 KiB

putovanje

#include<bits/stdc++.h>
#define int long long
#define d0 1
#define d1 11
#define d2 110
#define d3 1010
#define d4 10010
#define d5 100010
#define d6 1000010
#define down cout<<'\n';
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define debug(x) cerr<<x<<" ";
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define sz(s) s.size()
#define pii pair<int,int>
#define pb push_back
#define checktime   cout << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
#define rep(i,m,n) for(int i=m;i<=n;i++)
#define reb(i,m,n) for(int i=m;i>=n;i--)
#define ALL(v) v.begin(), v.end()
#define base 31
#define base2 37
using namespace std;
void phongbeo();
void de();
template<typename A, typename B>istream& operator>>(istream& in, pair<A, B> &v)
{
    in >> v.first >> v.second;
    return in;
}
template<typename A, typename B> ostream& operator<<(ostream& out, const pair<A, B> &v)
{
    out << v.first << " " << v.second << " ";
    return out;
}
template < class T > bool minimize(T& a, const T& b)
{
    return b < a ? a = b, 1 : 0;
}
template < class T > bool maximize(T& a, const T& b)
{
    return a < b ? a = b, 1 : 0;
}
mt19937 rd(chrono::high_resolution_clock::now().time_since_epoch().count    ());
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
const int dx2[8] = {0, 1, 1, 1, 0, -1, -1, -1};
const int dy2[8] = {1, 1, 0, -1, -1, -1, 0, 1};
const int mod2=1e9+7;
const int mod=20215201314;
const int  mod1=998244353;
struct ib
{
    int a;
    int b;
};
struct icd
{
    int a,b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,b,c,d;
};
int minn=1e9,maxx=-1e9;
int n,m,s2,s4,s3,sf,k,l,r,dem=0,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0;
int  s,i;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
    //fin(task),fou(task);
#endif
    NHP
//modwwe
    phongbeo(),down
#ifndef ONLINE_JUDGE
    //checktime
#endif
}
vector<ic> v[2*d5];
int st[18][2*d5],depth[2*d5],dp[2*d5];
void dfs(int x,int y)
{st[0][x]=y;
depth[x]=depth[y]+1;
     for(auto f:v[x])
     { if(f.a!=y)
          dfs(f.a,x);
     }
}
void lca(int x,int y)
{
     if(depth[x]>depth[y]) swap(x,y);
     int sx= depth[y]-depth[x];
     for(int j=0;j<18;j++)
 if(bit(sx,j))
y=st[j][y];
if(x==y){dp[x]-=2;
 return;
 }
 for(int j=17;j>=0;--j)
     if(st[j][x]!=st[j][y])
 {
      y=st[j][y];
       x=st[j][x];
 }
  dp[st[0][x]]-=2;
 }
 void dfs2(int x,int y)
 {
     for(auto f:v[x])
     {
          if(f.a!=y)
          {
              dfs2(f.a,x);
s6+=min(f.b*dp[f.a],f.c);
                dp[x]+=dp[f.a];
          }
     }
 }
    void phongbeo()
{
    cin>>n;
 for(int i=1;i<n;i++)
 {
     cin>>s2>>s3>>s4>>s5;
      v[s2].pb({s3,s4,s5});
      v[s3].pb({s2,s4,s5});
 }
 dfs(1,0);
 for(int j=1;j<18;j++)
    for(int i=1;i<=n;i++)
    st[j][i]=st[j-1][st[j-1][i]];
 for(int i=1;i<=n-1;i++)
 {
    dp[i]++;
    dp[i+1]++;
    lca(i,i+1);
 }
 dfs2(1,0);
 cout<<s6;
    }

Compilation message (stderr)

putovanje.cpp:78:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   78 | main()
      | ^~~~

• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 65 / 65