oj.uz

Submission #334678

# Submission time Handle Problem Language Result Execution time Memory
334678 2020-12-09T18:28:34 Z limabeans Simple game (IZhO17_game) C++17
100 / 100
 438 ms 65772 KB 
#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;

struct segtree {
    int n;
    vector<ll> t, o;
    void init(int _n) {
	n=_n+10;
	t.assign(4*n,0);
	o.assign(4*n,0);
    }

    void push(int v, int tl, int tr) {
	if (!o[v]) return;
	int tm=(tl+tr)/2;
	t[2*v] += 1ll*(tm-tl+1)*o[v];
	t[2*v+1] += 1ll*(tr-tm)*o[v];
	o[2*v] += o[v];
	o[2*v+1] += o[v];
	o[v] = 0;
    }

    ll qry(int v, int tl, int tr, int l, int r) {
	if (l>tr || r<tl) return 0;
	if (l<=tl && tr<=r) return t[v];
	push(v,tl,tr);
	int tm=(tl+tr)/2;
	return qry(2*v,tl,tm,l,r)+qry(2*v+1,tm+1,tr,l,r);
    }

    void upd(int v, int tl, int tr, int l, int r, ll dx) {
	if (l>tr || r<tl) return;
	if (l<=tl && tr<=r) {
	    t[v] += 1ll*(tr-tl+1)*dx;
	    o[v] += dx;
	} else {
	    push(v,tl,tr);
	    int tm=(tl+tr)/2;
	    upd(2*v,tl,tm,l,r,dx);
	    upd(2*v+1,tm+1,tr,l,r,dx);
	    t[v]=t[2*v]+t[2*v+1];
	}
    }
};

int n,q;
int a[maxn];

const int N = 1e6 + 10;
segtree tree;


void upd(int l, int r, int dx) {
    tree.upd(1,1,N,l,r,dx);
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

    cin>>n>>q;
    tree.init(N);

    for (int i=1; i<=n; i++) {
	cin>>a[i];
    }
    for (int i=1; i<n; i++) {
	int x = min(a[i],a[i+1]);
	int y = max(a[i],a[i+1]);
	upd(x,y,+1);
    }

    while (q--) {
	int op;
	cin>>op;
	if (op==1) {
	    int i,x;
	    cin>>i>>x;
	    if (i+1<=n) {
		upd(min(a[i],a[i+1]),max(a[i],a[i+1]),-1);
	    }
	    if (i-1>=1) {
		upd(min(a[i],a[i-1]),max(a[i],a[i-1]),-1);
	    }
	    a[i]=x;
	    if (i+1<=n) {
		upd(min(a[i],a[i+1]),max(a[i],a[i+1]),+1);
	    }
	    if (i-1>=1) {
		upd(min(a[i],a[i-1]),max(a[i],a[i-1]),+1);
	    }
	} else {
	    int h;
	    cin>>h;
	    cout<<tree.qry(1,1,N,h,h)<<"\n";
	}
    }
    
    
    
    return 0;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 62956 KB Output is correct
2 Correct 42 ms 62956 KB Output is correct
3 Correct 40 ms 62956 KB Output is correct
4 Correct 41 ms 62956 KB Output is correct
5 Correct 40 ms 62976 KB Output is correct
6 Correct 41 ms 62956 KB Output is correct
7 Correct 38 ms 62956 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 62956 KB Output is correct
2 Correct 42 ms 62956 KB Output is correct
3 Correct 40 ms 62956 KB Output is correct
4 Correct 41 ms 62956 KB Output is correct
5 Correct 40 ms 62976 KB Output is correct
6 Correct 41 ms 62956 KB Output is correct
7 Correct 38 ms 62956 KB Output is correct
8 Correct 112 ms 64364 KB Output is correct
9 Correct 228 ms 65644 KB Output is correct
10 Correct 229 ms 65644 KB Output is correct
11 Correct 104 ms 64236 KB Output is correct
12 Correct 147 ms 65388 KB Output is correct
13 Correct 152 ms 65516 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 62956 KB Output is correct
2 Correct 42 ms 62956 KB Output is correct
3 Correct 40 ms 62956 KB Output is correct
4 Correct 41 ms 62956 KB Output is correct
5 Correct 40 ms 62976 KB Output is correct
6 Correct 41 ms 62956 KB Output is correct
7 Correct 38 ms 62956 KB Output is correct
8 Correct 112 ms 64364 KB Output is correct
9 Correct 228 ms 65644 KB Output is correct
10 Correct 229 ms 65644 KB Output is correct
11 Correct 104 ms 64236 KB Output is correct
12 Correct 147 ms 65388 KB Output is correct
13 Correct 152 ms 65516 KB Output is correct
14 Correct 435 ms 65644 KB Output is correct
15 Correct 435 ms 65644 KB Output is correct
16 Correct 438 ms 65772 KB Output is correct
17 Correct 437 ms 65772 KB Output is correct
18 Correct 433 ms 65644 KB Output is correct