Submission #1300029

#	Time	Username	Problem	Language	Result	Execution time	Memory
1300029		trandangquang	Sprinkler (JOI22_sprinkler)	C++20	100 / 100	520 ms	52996 KiB

sprinkler

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

#define foru(i,a,b) for(int i=(a); i<=(b); ++i)
#define ford(i,a,b) for(int i=(a); i>=(b); --i)
#define rep(i,a) for(int i=0; i<(a); ++i)
#define sz(a) (int)(a).size()
#define all(a) (a).begin(),(a).end()
#define bit(s,i) (((s)>>(i))&1)
#define ii pair<int,int>
#define vi vector<int>
#define vii vector<ii>
#define fi first
#define se second
#define ll long long
#define eb emplace_back
#define pb push_back
#define __builtin_popcount __builtin_popcountll
#define _ << " " <<

template <class X, class Y> bool maxi(X &x, Y y){return x<y?x=y,true:false;}
template <class X, class Y> bool mini(X &x, Y y){return x>y?x=y,true:false;}

const int N=2e5+5;

int n,l,q,par[N],init[N],tag[N][41];
vi adj[N];

void dfs(int u, int p=-1){
    for(int v:adj[u]) if(v!=p){
        par[v]=u;
        dfs(v,u);
    }
}

void solve(){
    cin>>n>>l;
    rep(i,n-1){
        int u,v; cin>>u>>v;
        adj[u].eb(v); adj[v].eb(u);
    }
    foru(i,1,n){
        cin>>init[i];
    }
    dfs(1);

    foru(i,1,n) foru(j,0,40) tag[i][j]=1;

    cin>>q;
    foru(i,1,q){
        int t; cin>>t;
        if(t==1){
            int x,d,w; cin>>x>>d>>w;
            while(x>0 && d>=0){
                if(par[x]>0 && d>0){
                    tag[x][d]=1LL*tag[x][d]*w%l;
                    tag[x][d-1]=1LL*tag[x][d-1]*w%l;
                } else{
                    foru(j,0,d){
                        tag[x][j]=1LL*tag[x][j]*w%l;
                    }
                }
                --d; x=par[x];
            }
        } else if(t==2){
            int x,d=0; cin>>x;

            int res=init[x]%l;
            while(x>0 && d<=40){
                res=1LL*res*tag[x][d] % l;
                ++d; x=par[x];
            }
            cout<<res<<'\n';
        } else{
            assert(0);
        }
    }
}

int32_t main(){
    #define task "test"
    if(fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    cin.tie(0)->sync_with_stdio(0);

    int tc=1; //cin>>tc;
    foru(i,1,tc){
        solve();
    }
}

Compilation message (stderr)

sprinkler.cpp: In function 'int32_t main()':
sprinkler.cpp:83:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sprinkler.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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