Submission #558646

#	Time	Username	Problem	Language	Result	Execution time	Memory
558646		groshi	Secret (JOI14_secret)	C++17	100 / 100	497 ms	8316 KiB

secret

#include<iostream>
#include "secret.h"
using namespace std;
int n;
int t[100000];
int wyn[1010][1010];
/*long long Secret(int x,int y)
{
    return x+y;
}*/
void rob(int l,int r)
{
    int sre=(l+r)/2;
    wyn[sre][sre]=t[sre];
    wyn[sre+1][sre+1]=t[sre+1];
    for(int i=sre+2;i<=r;i++)
        wyn[sre+1][i]=Secret(wyn[sre+1][i-1],t[i]);
    for(int i=sre-1;i>=l;i--)
        wyn[i][sre]=Secret(t[i],wyn[i+1][sre]);
    if(sre>l)
        rob(l,sre);
    if(sre+1<r)
        rob(sre+1,r);
}
int zap(int x1,int y1,int l,int r)
{
    int mid=(x1+y1)/2;
    if(x1==y1)
        return wyn[x1][y1];
    if(l<=mid && mid<r)
        return Secret(wyn[l][mid],wyn[mid+1][r]);
    if(l>mid)
        return zap(mid+1,y1,l,r);
    else return zap(x1,mid,l,r);
}
void Init(int N,int A[])
{
    n=N;
    for(int i=0;i<n;i++)
        t[i]=A[i];
    rob(0,n-1);
}
int Query(int l,int r)
{
    return zap(0,n-1,l,r);
}
/*int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int t[5]={1,4,2,3,6};
    Init(5,t);
    cout<<Query(0,4)<<"\n";
    return 0;
}*/

• Subtask 1: 100 / 100