oj.uz

Submission #522194

# Submission time Handle Problem Language Result Execution time Memory
522194 2022-02-04T03:46:08 Z Killer2501 Simple game (IZhO17_game) C++14
100 / 100
 99 ms 30344 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pll pair<ll, ll>
#define pii pair<ll, pll>
#define fi first
#define se second
using namespace std;
const int N = 1e6+5;
const int M = 350;
const ll mod = 1e9+9;
const ll inf = 2e9;
int m, k, t,  n;
int ans, a[N], b[N], c[N], h[N], d[N];
string s;
vector<int> adj[N], kq;
vector<int> val;
mt19937_64 mt(chrono::steady_clock::now().time_since_epoch().count());
ll pw(ll k, ll n)
{
    ll total =1 ;
    for(; n; n >>= 1)
    {
        if(n&1)total = total * k % mod;
        k = k * k % mod;
    }
    return total;
}
struct node
{
	int l, r, val, lazy;
    node(){}
    node(int _l, int _r, int _val, int _lazy)
    {
    	l = _l;
    	r = _r;
    	val = _val;
    	lazy = _lazy;
    }
};
vector<node> st;
int build(int l, int r)
{
	if(l == r)
	{
		st.pb(node(0, 0, b[l], 0));
		return st.size()-1;
	}
	int mid = (l+r)>>1;
	node cur;
	cur.l = build(l, mid);
	cur.r = build(mid+1, r);
	cur.lazy = 0;
	cur.val = min(st[cur.l].val, st[cur.r].val);
	st.pb(cur);
	return st.size()-1;
}
struct BIT
{
	int n;
	vector<int> fe;
	BIT(int _n)
	{
		n = _n;
		fe.resize(n+1, 0);
	}
	void add(int id, int x)
	{
		for(; id <= n; id += id & -id)fe[id] += x;
	}
	void add(int l, int r, int x)
	{
		if(l > r)swap(l, r);
		add(l, x);
		add(r, -x);
	}
	int get(int id)
	{
		int total = 0;
		for(; id; id -= id & -id)total += fe[id];
		return total;
	}
};
void sol(int icase)
{
	cin >> n >> m;
	k = 1e6;
	BIT bit(k);
	for(int i = 1; i <= n; i ++)cin >> a[i];
	for(int i = 2; i <= n; i ++)
	{
		bit.add(a[i-1], a[i], 1);
		if(i < n)bit.add(a[i], a[i], -1);
	}
	while(m -- > 0)
	{
		cin >> t;
		int x, y;
		if(t == 2)
		{
			cin >> x;
			cout << bit.get(x) << '\n';
		}
		else
		{
			cin >> x >> y;
			if(x > 1)bit.add(a[x-1], a[x], -1);
			if(x < n)bit.add(a[x+1], a[x], -1);
			if(x > 1 && x < n)bit.add(a[x], a[x], 1);
			a[x] = y;
			if(x > 1)bit.add(a[x-1], a[x], 1);
			if(x < n)bit.add(a[x+1], a[x], 1);
			if(x > 1 && x < n)bit.add(a[x], a[x], -1);
		}
	}
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    #define task "test"
    if(fopen(task".inp", "r"))
	{
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}
    int test = 1;
    //cin >> test;
    for(int i = 1; i <= test; i ++)sol(i);
    return 0;
}

Compilation message

game.cpp: In function 'int main()':
game.cpp:127:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  127 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
game.cpp:128:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  128 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 27676 KB Output is correct
2 Correct 17 ms 27756 KB Output is correct
3 Correct 17 ms 27700 KB Output is correct
4 Correct 16 ms 27660 KB Output is correct
5 Correct 16 ms 27660 KB Output is correct
6 Correct 16 ms 27696 KB Output is correct
7 Correct 15 ms 27724 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 27676 KB Output is correct
2 Correct 17 ms 27756 KB Output is correct
3 Correct 17 ms 27700 KB Output is correct
4 Correct 16 ms 27660 KB Output is correct
5 Correct 16 ms 27660 KB Output is correct
6 Correct 16 ms 27696 KB Output is correct
7 Correct 15 ms 27724 KB Output is correct
8 Correct 57 ms 29000 KB Output is correct
9 Correct 52 ms 30332 KB Output is correct
10 Correct 64 ms 30276 KB Output is correct
11 Correct 60 ms 29100 KB Output is correct
12 Correct 51 ms 30020 KB Output is correct
13 Correct 57 ms 30156 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 27676 KB Output is correct
2 Correct 17 ms 27756 KB Output is correct
3 Correct 17 ms 27700 KB Output is correct
4 Correct 16 ms 27660 KB Output is correct
5 Correct 16 ms 27660 KB Output is correct
6 Correct 16 ms 27696 KB Output is correct
7 Correct 15 ms 27724 KB Output is correct
8 Correct 57 ms 29000 KB Output is correct
9 Correct 52 ms 30332 KB Output is correct
10 Correct 64 ms 30276 KB Output is correct
11 Correct 60 ms 29100 KB Output is correct
12 Correct 51 ms 30020 KB Output is correct
13 Correct 57 ms 30156 KB Output is correct
14 Correct 89 ms 30340 KB Output is correct
15 Correct 92 ms 30332 KB Output is correct
16 Correct 99 ms 30344 KB Output is correct
17 Correct 79 ms 30296 KB Output is correct
18 Correct 68 ms 30296 KB Output is correct