Submission #1010996

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010996		imarn	JOI tour (JOI24_joitour)	C++17	0 / 100	832 ms	192240 KiB

joitour

#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vl vector<ll>
#define vvi vector<vi>
using namespace std;
const int mxn=2e5+5;
vector<int>g[mxn],f;
int sz[mxn]{0},lv[mxn]{0},pr[mxn];
bool vis[mxn]{0};
ll ans=0;
int getsz(int u,int p){
    sz[u]=1;
    for(auto v:g[u])if(v!=p&&!vis[v])sz[u]+=getsz(v,u);
    return sz[u];
}
int getct(int u,int p,int r){
    for(auto v:g[u])if(v!=p&&!vis[v]&&sz[v]*2>r)return getct(v,u,r);
    return u;
}
vector<ll>dp[6][mxn];
ll td[6][mxn]{0};
struct few{
    int fw[mxn]{0};
    void add(int i,int amt){
        for(;i<mxn;i+=i&-i)fw[i]+=amt;
    }
    ll qr(int i,ll res=0){
        for(;i;i-=i&-i)res+=fw[i];
        return res;
    }
}fw[3][19],wf[3][19];
int tin[19][mxn],tout[19][mxn],cnt[19]{0};
ll getP(int col,int lvl,int u){
    return fw[col][lvl].qr(tin[lvl][u]);
}
ll getC(int col,int lvl,int u){
    return wf[col][lvl].qr(tout[lvl][u])-wf[col][lvl].qr(tin[lvl][u]-1);
}
void gen1(int u,int p,int x,int id,int x0,int x1,int x2){
    dp[f[u]][x][id]++;tin[lv[x]][u]=++cnt[lv[x]];
    fw[0][lv[x]].add(tin[lv[x]][u],x0);
    fw[1][lv[x]].add(tin[lv[x]][u],x1);
    fw[2][lv[x]].add(tin[lv[x]][u],x2);
    if(f[u]==2)dp[3][x][id]+=x1;
    for(auto v:g[u])if(v!=p&&!vis[v])gen1(v,u,x,id,x0+(f[v]==0),x1+(f[v]==1),x2+(f[v]==2));
    tout[lv[x]][u]=++cnt[lv[x]];
}
void gen2(int u,int p,int x,int id){
    for(auto v:g[u])if(v!=p&&!vis[v])gen2(v,u,x,id);
    wf[f[u]][lv[x]].add(tin[lv[x]][u],1);
    if(f[u]==1)dp[4][x][id]+=getC(0,lv[x],u);
}
void play(int u,int p){int id=-1;
    u = getct(u,u,getsz(u,u));vis[u]=1;
    pr[u]=p;if(lv[p]!=-1)lv[u]=lv[p]+1;
    tin[lv[u]][u]=++cnt[lv[u]];
    for(auto v:g[u]){
        if(vis[v])continue;
        for(int i=0;i<6;i++)dp[i][u].pb(0);id++;
        gen1(v,u,u,id,(f[v]==0),(f[v]==1),(f[v]==2));gen2(v,u,u,id);
        for(int i=0;i<6;i++)td[i][u]+=dp[i][u][id];
    }tout[lv[u]][u]=cnt[lv[u]];
    for(int j=0;j<=id;j++){
        ans+=dp[0][u][j]*(td[3][u]-dp[3][u][j]);
        ans+=dp[4][u][j]*(td[2][u]-dp[2][u][j]);
        if(f[u]==1)ans+=dp[0][u][j]*(td[2][u]-dp[2][u][j]);
    }if(f[u]==0)ans+=td[3][u];if(f[u]==2)ans+=td[4][u];
    for(auto v:g[u])if(!vis[v])play(v,u);
}
void init(int N, std::vector<int> F, std::vector<int> U, std::vector<int> V,int Q){
    f=F;for(int i=0;i<N-1;i++)g[U[i]].pb(V[i]),g[V[i]].pb(U[i]);
    play(0,-1);
}

void change(int X, int Y) {}

long long num_tours() {
  return ans;
}

Compilation message (stderr)

joitour.cpp: In function 'void play(int, int)':
joitour.cpp:69:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   69 |         for(int i=0;i<6;i++)dp[i][u].pb(0);id++;
      |         ^~~
joitour.cpp:69:44: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   69 |         for(int i=0;i<6;i++)dp[i][u].pb(0);id++;
      |                                            ^~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 6
• Subtask 4: 0 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 34
• Subtask 7: 0 / 14