Submission #758155

#	Time	Username	Problem	Language	Result	Execution time	Memory
758155		vjudge1	Simple game (IZhO17_game)	C++17	0 / 100	11 ms	16196 KiB

game

#include <bits/stdc++.h>
#include <fstream>
#define endl '\n'
#define mod 1000007
#define INF 1000000000000000000
//#define ll long long
///#define cin fin
///#define cout fout
#define fi first
#define se second
using namespace std;
double const EPS = 1e-14;
///ofstream fout("herding.out");
///ifstream fin("herding.in");
const int Max = 1e6 + 5;
const int M = 1e6;
struct Lazy{
    int sum;
    bool laz;
    int va;

};
Lazy seg[4*Max];
void push(int x, int l, int r) {
    if(seg[x].laz == 0 || l == r) return;
    int mid = (l+r)/2;

    seg[x].laz = 0;
    seg[x*2].laz = 1;
    seg[x*2+1].laz = 1;

    seg[x*2].sum = (mid-l+1)*seg[x].va;
    seg[x*2+1].sum = (r-(mid+1)+1)*seg[x].va;
    seg[x*2].va = seg[x].va;
    seg[x*2+1].va = seg[x].va;
   // cout << l << ' ' << r << ' ' << mid << 'h' << endl;
   // cout << seg[x].sum << ' ' << seg[x*2].sum << ' ' << seg[x*2+1].sum << endl;


}

void Update(int x, int l, int r, int L, int R,int val) {
    push(x,l,r);
    if(R < l || r < L) {
        return;}
    else if(l >= L && r <= R) {
     //   cout << l << ' ' << r << 'k' << endl;
        seg[x].laz = 1;
        seg[x].sum += (r-l+1)*val;
        seg[x].va += val;
      //  cout << seg[x].sum << 'j' << endl;
    }
    else {
        int mid = (l+r)/2;
        Update(x*2,l,mid,L,R,val);
        Update(x*2+1,mid+1,r,L,R,val);
    }
}

int sol(int x, int l, int r, int L, int R) {
    push(x,l,r);
    if(R < l || r < L) {
        return 0;}
    else if(l >= L && r <= R) {
        return seg[x].sum;
    }
    else {
        int mid = (l+r)/2;
         return sol(x*2,l,mid,L,R)+sol(x*2+1,mid+1,r,L,R);
    }
}

int main()
{
    ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
    int n, m; cin >> n >> m; int arr[n];
    for(int i = 0; i < n; i++) cin >> arr[i];
    for(int i = 1; i < n; i++) {
        if(arr[i-1] < arr[i]) {
            Update(1,1,M,arr[i-1],arr[i],1);
        }
        else {
            Update(1,1,M,arr[i],arr[i-1],1);
        }
    }
   // cout << sol(1,1,M,3,3) << endl;
    while(m--) {
        int ty; cin >> ty;
        if(ty == 1) {
            int pos, val; cin >> pos >> val;
            if(pos > 1) {
                if(arr[pos-2] < arr[pos-1]) {
                    Update(1,1,M,arr[pos-2],arr[pos-1],-1);
                } else {
                    Update(1,1,M,arr[pos-1],arr[pos-2],-1);
                }
                if(arr[pos-2] < val) {
                    Update(1,1,M,arr[pos-2],val,1);
                } else {
                    Update(1,1,M,val,arr[pos-2],1);
                }

            }
            if(pos < n) {
                if(arr[pos] < arr[pos-1]) {
                    Update(1,1,M,arr[pos],arr[pos-1],-1);
                } else {
                    Update(1,1,M,arr[pos-1],arr[pos],-1);
                }
                if(arr[pos] < val) {
                    Update(1,1,M,arr[pos],val,1);
                } else {
                    Update(1,1,M,val,arr[pos],1);
                }
            }
            arr[pos-1] = val;
        }
        else {
            int h; cin >> h;
            cout << sol(1,1,M,h,h) << endl;
        }
    }

 return 0;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51