Submission #91891

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
91891	2018-12-31 10:02:47	easrui	Growing Trees (BOI11_grow)	C++14	100 / 100	652 ms	3704 KiB

grow

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#include <bits/stdc++.h>
using namespace std;
const int MAX = 1e5+5;
int N,M,A[MAX],T[4*MAX];
void upt(int l, int r, int st, int en, int pos, int val){
    if(en<l || st>r) return;
    if(l<=st && en<=r){
        T[pos] += val;
        return;
    }
    upt(l,r,st,(st+en)/2,pos*2,val);
    upt(l,r,(st+en)/2+1,en,pos*2+1,val);
}
int get(int x, int st, int en, int pos){
    if(en<x || st>x) return 0;
    if(st==en) return T[pos];
    return T[pos]+get(x,st,(st+en)/2,2*pos)+get(x,(st+en)/2+1,en,2*pos+1);
}
int sear(int h, int st, int en){
    if(st==en) return st;
    if(get((st+en)/2,1,N,1)>=h) return sear(h,st,(st+en)/2);
    else return sear(h,(st+en)/2+1,en);
}
int main()
{
    cin >> N >> M;
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10