Submission #792178

#	Time	Username	Problem	Language	Result	Execution time	Memory
792178		winter0101	Sprinkler (JOI22_sprinkler)	C++14	100 / 100	984 ms	103792 KiB

sprinkler

#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define pil pair<int,long long>
#define pll pair<long long,long long>
#define eb emplace_back
#define int long long
const int maxn=2e5+9;
int n;
long long l;
vector<int>a[maxn];
long long mul[maxn][41];
int dep[maxn];
int p[maxn];
long long h[maxn];
void dfs(int u,int par){
for (auto v:a[u]){
    if(v==par)continue;
    p[v]=u;
    dep[v]=dep[u]+1;
    dfs(v,u);
}
}
void update(int x,int d,long long w){
if (x==0||d==-1)return;
update(p[x],d-1,w);
if (x==1){
    for1(i,0,d)mul[x][i]=(mul[x][i]*w)%l;
}
else {
    mul[x][d]=(mul[x][d]*w)%l;
    if (d)mul[x][d-1]=(mul[x][d-1]*w)%l;
}
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    cin>>n>>l;
    for1(i,1,n-1){
    int u,v;
    cin>>u>>v;
    a[u].pb(v);
    a[v].pb(u);
    }
    dfs(1,0);
    for1(i,1,n)cin>>h[i];
    for1(i,1,n){
    for1(j,0,40){
    mul[i][j]=1;
    }
    }
    int q;
    cin>>q;
    for1(i,1,q){
    int t;
    cin>>t;
    if (t==1){
       int x,dis;
       long long w;
       cin>>x>>dis>>w;
       update(x,dis,w);
    }
    else {
        int x;
        cin>>x;
        long long nw=h[x];
        int u=x;
        for1(j,0,40){
        nw=(nw*mul[u][j])%l;
        //cout<<u<<" "<<mul[u][j]<<" "<<j<<'\n';
        if (p[u]!=0)u=p[u];
        else break;
        }
        cout<<nw<<'\n';
    }
    }
}

• Subtask 1: 3 / 3
• Subtask 2: 9 / 9
• Subtask 3: 29 / 29
• Subtask 4: 12 / 12
• Subtask 5: 30 / 30
• Subtask 6: 17 / 17