Submission #846588

#	Time	Username	Problem	Language	Result	Execution time	Memory
846588		AndriaBeridze	Weighting stones (IZhO11_stones)	C++14	100 / 100	186 ms	10816 KiB

stones

#include<bits/stdc++.h>

using namespace std;
int TC = 0;

void dbg_out() {cout << endl;}
template<typename Head, typename... Tail>
void dbg_out(Head H, Tail... T) {cout << " " << H; dbg_out(T...);}
#define debug(...) {cout << "(" << #__VA_ARGS__ << "):"; dbg_out(__VA_ARGS__);}

#define IOS ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
#define int long long
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define add push_back
#define size(v) (int) v.size()
#define left node * 2, l, (l + r) / 2
#define right node * 2 + 1, (l + r) / 2 + 1, r
#define check() cout << "Why doesn't this stupid a** code work?" << endl;
#define inf (int) 1e18

vector<pair<int, int>> t(400005, {0, 0});
vector<int> p(400005, 0);

void update(int node, int l, int r, int L, int R, int val){
    if(l > R || L > r) return;
    if(L <= l && r <= R){
        p[node] += val;
        return;
    }

    t[node].first += p[node], t[node].second += p[node];
    p[node * 2] += p[node];
    p[node * 2 + 1] += p[node];
    p[node] = 0;

    update(left, L, R, val);
    update(right, L, R, val);

    t[node].first = min(t[node * 2].first + p[node * 2], t[node * 2 + 1].first + p[node * 2 + 1]);
    t[node].second = max(t[node * 2].second + p[node * 2], t[node * 2 + 1].second + p[node * 2 + 1]);
}

void solve(){
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        int r, s;
        cin >> r >> s;
        int k = (s == 1 ? 1 : -1);
        update(1, 1, n, 1, r, k);

        if((t[1].first + p[1]) * (t[1].second + p[1]) < 0){
            cout << "?\n";
        }
        else if((t[1].first + p[1]) > 0 || (t[1].second + p[1]) > 0){
            cout << ">\n";
        }
        else{
            cout << "<\n";
        }
    }
}

signed main(){
    int q = 1;
    //cin >> q;
    while(++TC <= q){
    	solve();
    }
}

• Subtask 1: 100 / 100