oj.uz

답안 #467907

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
467907 2021-08-25T14:58:11 Z trumchepcode Deda (COCI17_deda) C++14
140 / 140
 162 ms 8776 KB 
#include <bits/stdc++.h>
using namespace std;
const int N=200001;
const long long inf=1e9+7;
int n,q;
long long st[4*N];
void build(int id,int l,int r)
{
    if(l>r) return ;
    if(l==r)
    {
        st[id]=inf;
        return ;
    }
    int mid=(l+r)/2;
    build(id*2,l,mid);
    build(id*2+1,mid+1,r);
    st[id]=min(st[id*2],st[id*2+1]);
}
void update(int id,int l,int r,int a,int x)
{
    if(l>a||a>r) return ;
     if(l==r)
     {
         st[id]=x;
         return ;
     }
     int mid=(l+r)/2;
     update(id*2,l,mid,a,x);
     update(id*2+1,mid+1,r,a,x);
     st[id]=min(st[id*2],st[id*2+1]);
}
long long get(int id,int l,int r,int u,int v,int x)
{
    if(u>v||st[id]>x||u>r||v<l) return -1;
    if(l==r)
    {
        return l;
    }
    int mid=(l+r)/2;
    int vitri=get(id*2,l,mid,u,v,x);
    if(vitri!=-1) return vitri;
    return get(id*2+1,mid+1,r,u,v,x);
}
void giai()
{
    cin >> n >> q;
    build(1,1,n);
    for(int i=1;i<=q;i++)
    {
        char t;
        cin >> t;
        if(t=='M')
        {
            long long x;
            int a;
            cin >> x >> a;
            update(1,1,n,a,x);
        }
        else
        {
            long long x,b;
            cin >> x >> b;
            if(get(1,1,n,b,n,x)==inf) cout << "-1" << '\n';
            else cout << get(1,1,n,b,n,x) << '\n';
        }
    }
}
// trang mới của nps
int main ()
{
      ios::sync_with_stdio(false);
    cin.tie(0);
    //freopen("corona.inp","r",stdin);
    //freopen("corona.out","w",stdout);
    giai();
}

Subtask #1
140.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 3 ms 332 KB Output is correct
4 Correct 122 ms 8740 KB Output is correct
5 Correct 117 ms 3016 KB Output is correct
6 Correct 124 ms 8572 KB Output is correct
7 Correct 162 ms 8776 KB Output is correct