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Submission #685656

# Submission time Handle Problem Language Result Execution time Memory
685656 2023-01-24T18:37:15 Z Ronin13 Weighting stones (IZhO11_stones) C++14
100 / 100
 80 ms 24744 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;
const int nmax = 5e5 + 1;
struct node{
    int sum, mn, mx;
    node(){
        sum = 0;
        mx = -1e9;
        mn = 1e9;
    }
    node(int val){
        sum = val;
        mx = val;
        mn = val;
    }
}t[4 * nmax];

node merg(node a, node b){
    node c;
    c.sum = a.sum + b.sum;
    c.mn = min(a.mn + b.sum, b.mn);
    c.mx = max(a.mx + b.sum, b.mx);
    return c;
}

void update(int v, int l, int r, int pos, int val){
    if(l > pos || r < pos) return;
    if(l == r){
        t[v] = {val};
        return;
    }
    int m = (l + r) / 2;
    update(2 * v, l, m, pos, val);
    update(2 * v + 1, m + 1, r, pos, val);
    t[v] = merg(t[2 * v], t[2 * v + 1]);
}


int main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    pii mx = {0, 0};

    int n; cin >> n;
    for(int i = 1; i <= n; i++){
        int x, y; cin >> x >> y;
        if(y == 1)
            update(1, 1, n, x, 1);
        else update(1, 1, n, x, -1);
        if(mx.f < x)
            mx = {x, y};
        if(mx.s == 1){
            if(t[1].mn >= 0) cout << '>';
            else cout << '?';
        }
        else{
            //cout << t[1].mx << "\n";
            if(t[1].mx <= 0) cout << '<';
            else cout << '?';
        }
        cout << "\n";
    }
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23748 KB Output is correct
2 Correct 14 ms 23776 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 11 ms 23764 KB Output is correct
6 Correct 11 ms 23760 KB Output is correct
7 Correct 11 ms 23808 KB Output is correct
8 Correct 13 ms 23744 KB Output is correct
9 Correct 11 ms 23812 KB Output is correct
10 Correct 16 ms 23760 KB Output is correct
11 Correct 34 ms 24268 KB Output is correct
12 Correct 65 ms 24636 KB Output is correct
13 Correct 53 ms 24648 KB Output is correct
14 Correct 53 ms 24708 KB Output is correct
15 Correct 50 ms 24744 KB Output is correct
16 Correct 47 ms 24732 KB Output is correct
17 Correct 49 ms 24652 KB Output is correct
18 Correct 48 ms 24736 KB Output is correct
19 Correct 48 ms 24708 KB Output is correct
20 Correct 48 ms 24740 KB Output is correct
21 Correct 50 ms 24740 KB Output is correct
22 Correct 80 ms 24720 KB Output is correct
23 Correct 46 ms 24692 KB Output is correct
24 Correct 47 ms 24652 KB Output is correct
25 Correct 46 ms 24684 KB Output is correct