oj.uz

Submission #870395

# Submission time Handle Problem Language Result Execution time Memory
870395 2023-11-07T15:57:46 Z Elvin_Fritl Weighting stones (IZhO11_stones) C++17
100 / 100
 744 ms 15460 KB 
#include <bits/stdc++.h>

using namespace std;

/// toto -> 1

#define pb push_back
#define pii pair<int,int>
#define pll pair<ll,ll>
#define io                      \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);                   \
    cout.tie(0);
#define all(a) a.begin(),a.end()
#define rep(k,i,n) for(int k=i;k<n;k++)
#define repp(k,i,n) for(int k=n-1;k>=i;k--)
#define rech(k) for(char k='a';k<='z';k++)
#define SZ(a) (int)a.size()
#define MX(a) *max_element(all(a))
#define MN(a) *min_element(all(a))
#define SM(a) accumulate(all(a),0LL)
#define vi vector<int>
#define vl vector<long long>
#define vvl vector<vector<long long>>
#define vvi vector<vector<int>>

/// toto -> 2

const int mod = 1e9 + 7 , modd = 998244353;

void F1(bool res) {
    if(res) {
        cout<<"Yes\n" ;
    }
    else {
        cout<<"No\n" ;
    }
}

struct mint{
    int val;

    mint(int64_t v = 0) {
        v %= mod;
        if (v < 0) v += mod;
        val = v;
    }

    mint& operator+=(const mint& other) {
        val += other.val;
        if (val >= mod) val -= mod;
        return *this;
    }

    mint& operator-=(const mint& other) {
        val += mod - other.val;
        if (val >= mod) val -= mod;
        return *this;
    }

    mint& operator*=(const mint& other) {
        val = (int64_t)val * other.val % mod;
        return *this;
    }

    mint& operator/=(const mint& other) {
        return *this *= other.inv();
    }

    friend mint operator+(mint a, const mint& b) { return a += b; }
    friend mint operator-(mint a, const mint& b) { return a -= b; }
    friend mint operator*(mint a, const mint& b) { return a *= b; }
    friend mint operator/(mint a, const mint& b) { return a /= b; }

    mint pow(int64_t exp) const {
        mint a = *this, res = 1;
        while (exp > 0) {
            if (exp & 1)
                res *= a;
            a *= a;
            exp >>= 1;
        }
        return res;
    }

    mint inv() const {
        assert(val != 0);
        return pow(mod - 2);
    }

    friend ostream& operator<<(ostream& os, const mint& m) {
        return os << m.val;
    }
};

int bp(int n,int m){
    if(m == 0){
        return 1;
    }
    if(m == 1){
        return n%mod;
    }
    if(m%2==0){
        return bp(n*n%mod,m/2)%mod;
    }
    return n*bp(n,m-1)%mod;
}

typedef long long ll;

/// toto -> 3

const int N = 2e5 + 545, M = 1e6 + 5 , inf = 2e9 + 99;
const ll inff = 1e18 + 88;

struct pi{
	ll mx , mn , mark , lazy; 
};

pi tree[N*4];

void push(int v, int l, int r){
	if(l == r){
		tree[v].mark= 0;
		tree[v].lazy = 0;
		return;
	}
	if(tree[v].mark == 0){
		return;
	}
	/// updateing value of lazy ...
	tree[(v<<1)].mark = tree[(v<<1)+1].mark = 1;
	tree[(v<<1)].lazy += tree[v].lazy; 
	tree[(v<<1)+1].lazy += tree[v].lazy;
	tree[(v<<1)].mn += tree[v].lazy;
	tree[(v<<1)].mx += tree[v].lazy;
	tree[(v<<1)+1].mn += tree[v].lazy;
	tree[(v<<1)+1].mx += tree[v].lazy;
	tree[v].lazy = tree[v].mark = 0;
	tree[v].mn = min(tree[(v<<1)].mn, tree[(v<<1)+1].mn);
	tree[v].mx = max(tree[(v<<1)].mx, tree[(v<<1)+1].mx);
}

void update(int v,int l,int r,int ml,int mr,int val){
	if(l > r || ml > r || l > mr){
		return;
	}
	push(v,l,r);
	if(ml <= l && r <= mr){
		/// seting value
		tree[v].mn += val;
		tree[v].mx += val;
		tree[v].mark = 1;
		tree[v].lazy += val;
		return;
	}
	int mid = (l+r)>>1;
	update((v<<1) , l , mid , ml , mr , val);
	update((v<<1)|1 , mid+1 , r , ml , mr , val);
	tree[v].mn = min(tree[(v<<1)].mn, tree[(v<<1)+1].mn);
	tree[v].mx = max(tree[(v<<1)].mx, tree[(v<<1)+1].mx);
}

void solve(){
    
    int x , pos;
    cin>>x>>pos;
    update(1 , 1 , N ,1 , x , (pos == 1 ? -1 : 1));
	ll mx = tree[1].mx , mn = tree[1].mn;
	if(mn >= 0){
		cout<<"<\n";
	}
	else if(mx <= 0){
		cout<<">\n";
	}
	else{
		cout<<"?\n";
	}
}

int32_t main()
{

    io;
    
    ll t=1;
     cin>>t;
    rep(_,1,t+1)
    {
        cerr << "Start of test case " << _ << "\n";
        ///cout<<"Case #"<<_<<": ";
        solve();
        cerr << endl;
        cerr << endl;
    }
    return 0;

}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 2 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 3 ms 2396 KB Output is correct
6 Correct 4 ms 4444 KB Output is correct
7 Correct 7 ms 2396 KB Output is correct
8 Correct 9 ms 2632 KB Output is correct
9 Correct 8 ms 2392 KB Output is correct
10 Correct 60 ms 5204 KB Output is correct
11 Correct 386 ms 10832 KB Output is correct
12 Correct 628 ms 13564 KB Output is correct
13 Correct 727 ms 14352 KB Output is correct
14 Correct 668 ms 14300 KB Output is correct
15 Correct 672 ms 14280 KB Output is correct
16 Correct 675 ms 14568 KB Output is correct
17 Correct 677 ms 14192 KB Output is correct
18 Correct 680 ms 14940 KB Output is correct
19 Correct 744 ms 14420 KB Output is correct
20 Correct 673 ms 15460 KB Output is correct
21 Correct 669 ms 14228 KB Output is correct
22 Correct 692 ms 14576 KB Output is correct
23 Correct 706 ms 14572 KB Output is correct
24 Correct 723 ms 14584 KB Output is correct
25 Correct 691 ms 14372 KB Output is correct