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Submission #725518

# Submission time Handle Problem Language Result Execution time Memory
725518 2023-04-17T14:43:58 Z smirichto Growing Trees (BOI11_grow) C++17
100 / 100
 313 ms 17740 KB 
#include <bits/stdc++.h>

using namespace std;

const long long N = 2e5 + 5 ;

#define ll long long
#define endl '\n'

struct segmentTree {
    ll n;
    vector<ll> sum, lz, sumB , maxi , mini;
    void init(ll _n, ll b[]) {
        n = _n;
        sum.assign(4 * n + 6, 0);
        lz.assign(4 * n + 6, 0);
        sumB.assign(4 * n + 6, 0);
        maxi.assign(4 * n + 6, -2e9);
        mini.assign(4 * n + 6, 2e9);
        build(b, 1, 1, n);
    }
    void build(ll b[], ll i, ll l, ll r) {
        if (l == r) {
            sumB[i] = b[l];
            mini[i] = 0 ;
            maxi[i] = 0 ;
            return;
        }
        ll m = (l + r) >> 1;
        build(b, i << 1, l, m); build(b, i << 1 | 1, m + 1, r);
        sumB[i] = sumB[i << 1] + sumB[i << 1 | 1];
    }
    void pushdown(ll i) {
        for(ll j=i<<1; j<=(i<<1|1); ++j) {
            sum[j] += lz[i] * sumB[j];
            maxi[j] += lz[i] ;
            mini[j] += lz[i] ;
            lz[j] += lz[i];
        }
        lz[i] = 0;
    }
    void upd(ll i, ll l, ll r, ll u, ll v, ll delta) {
        if (l > r || u > v || l > v || r < u) return;
        if (l >= u && r <= v) {
            sum[i] += delta * sumB[i];
            maxi[i] += delta ;
            mini[i] += delta ;
            lz[i] += delta;
            return;
        }
        pushdown(i);
        ll m = (l + r) >> 1;
        upd(i << 1, l, m, u, v, delta); upd(i << 1 | 1, m + 1, r, u, v, delta);
        sum[i] = sum[i << 1] + sum[i << 1 | 1];
        maxi[i] = max(maxi[i<<1] , maxi[i<<1 | 1]) ;
        mini[i] = min(mini[i<<1] , mini[i<<1 | 1]) ;
    }
    void upd(ll u, ll v, ll delta) {
        upd(1, 1, n, u, v, delta);
    }
    ll f(ll x , ll y , ll tp)
    {
        if(tp==1) return x+y ;
        if(tp==2) return min(x , y) ;
        return max(x , y) ;
    }
    ll id(ll tp)
    {
        if(tp==1) return 0 ;
        if(tp==2) return 2e9 ;
        return -2e9 ;
    }
    ll get(ll i, ll l, ll r, ll u, ll v , ll tp) {
        if (l > r || u > v || l > v || r < u) return id(tp);
        if (l >= u && r <= v) return(tp == 1 ? sum[i] : tp==2 ? mini[i] : maxi[i]);
        pushdown(i);
        ll m = (l + r) >> 1;
        return f(get(i << 1, l, m, u, v , tp) , get(i << 1 | 1, m + 1, r, u, v , tp) , tp);
    }
    ll get2(ll node , ll l , ll r , ll idx){
        if(l==r) return sum[node];
        pushdown(node) ;
        ll md = (l+r)/2;
        if(idx<=md) return get2(2*node,l,md,idx);
        return get2(2*node+1,md+1,r,idx);
    }
    ll get(ll u, ll v , ll tp = 1) {
        return get(1, 1, n, u, v , tp);
    }

};

ll a[N] , b[N] ;

segmentTree st ;
ll n , q ;

int getlast(int node , int l , int r , int x)
{
    if(l==r) return l ;
    st.pushdown(node) ;
    if(st.mini[node]>x) return 0 ;
    int md = (l+r)/2 ;
    if(x>=st.mini[2*node+1]) return getlast(2*node+1 , md+1 , r , x) ;
    else return getlast(2*node , l , md , x) ;
}


int getlast(int x)
{
    return getlast(1 , 1 , n , x) ;
}
ll getfirst(int node , int l , int r , int x)
{
    if(l==r) return l ;
    st.pushdown(node) ;
    if(st.maxi[node]<x) return n+1 ;
    int md = (l+r)/2 ;
    if(st.maxi[2*node]>=x) return getfirst(2*node , l , md , x) ;
    else return getfirst(2*node+1 , md+1 , r , x) ;
}

ll getfirst(int x)
{
    return getfirst(1 , 1 , n , x) ;
}





int main()
{
    ios::sync_with_stdio(0), cin.tie(0),cout.tie(0) ;
    cin>>n>>q ;
    for(ll i = 1 ; i<=n ; i++){
        cin>>a[i] ;
        b[i] = 1 ;
    }
    st.init(n , b) ;
    sort(a+1 , a+n+1) ;
    for(ll i = 1 ; i<=n ; i++){
        st.upd(i , i ,a[i]) ;
    }

//    ll m ; cin>>m ;
//    while(m--){
//        ll a,  b ; cin>>a>>b ;
//        cout<<getfirst(a)<<' '<<getlast(b)<<endl;
//    }
    while(q--){

        char c ; cin>>c ;
        if(c=='F'){

            ll c , h ; cin>>c>>h ;
            ll l = getfirst(h) ;
            if(l==n+1) continue ;
            c = min(c , n - l+1) ;
            ll r = min(n , l+c-1) ;
            if(r==n){
                st.upd(l , r , 1) ;
                continue ;
            }
            ll x = st.get(r , r) ;
            ll lr = getlast(x-1) ;
            ll rr = getlast(x) ;
            ll lefties = max(0LL , lr - l+1) ;
            ll rl = (rr - (c - lefties) +1) ;
            // upd [l , lr] , upd[rl , rr]
            if(l<=lr){
                st.upd(l , lr , 1) ;
            }
            if(rl<=rr){
                st.upd(rl , rr , 1) ;
            }

        }
        else{
            ll a , b ; cin>>a>>b ;
            cout<<getlast(b) - getfirst(a)+1<<endl;
        }
//        for(ll i = 1 ; i<=n ; i++){
//            cout<<st.get(i , i)<<' ';
//        }
//        cout<<endl;
    }

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 233 ms 15624 KB Output is correct
2 Correct 230 ms 15276 KB Output is correct
3 Correct 205 ms 14452 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 3 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 57 ms 1356 KB Output is correct
6 Correct 76 ms 1524 KB Output is correct
7 Correct 9 ms 1236 KB Output is correct
8 Correct 91 ms 1312 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 1820 KB Output is correct
2 Correct 86 ms 1868 KB Output is correct
3 Correct 5 ms 1492 KB Output is correct
4 Correct 77 ms 1728 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 1948 KB Output is correct
2 Correct 81 ms 1796 KB Output is correct
3 Correct 17 ms 1560 KB Output is correct
4 Correct 84 ms 1872 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 11712 KB Output is correct
2 Correct 189 ms 12832 KB Output is correct
3 Correct 24 ms 3352 KB Output is correct
4 Correct 171 ms 12600 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 13212 KB Output is correct
2 Correct 223 ms 13992 KB Output is correct
3 Correct 205 ms 12416 KB Output is correct
4 Correct 24 ms 3408 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 205 ms 14248 KB Output is correct
2 Correct 232 ms 15680 KB Output is correct
3 Correct 198 ms 14036 KB Output is correct
4 Correct 22 ms 3380 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 15272 KB Output is correct
2 Correct 191 ms 13624 KB Output is correct
3 Correct 83 ms 17696 KB Output is correct
4 Correct 258 ms 15844 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 182 ms 15196 KB Output is correct
2 Correct 197 ms 15384 KB Output is correct
3 Correct 313 ms 17380 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 165 ms 17740 KB Output is correct