Submission #1307659

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307659		naman123	Snowball (JOI21_ho_t2)	C++20	0 / 100	1 ms	332 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, q;
    cin >> n >> q;

    vector<ll> x(n);
    for (int i = 0; i < n; i++) cin >> x[i];

    // Compute prefix sums of wind and track min/max
    ll cur = 0;
    ll mn = 0, mx = 0;
    for (int i = 0; i < q; i++) {
        ll w;
        cin >> w;
        cur += w;
        mn = min(mn, cur);
        mx = max(mx, cur);
    }

    // This tracks how far snow has been removed (in space, not time)
    ll rightmost_covered = LLONG_MIN / 4;

    vector<ll> weight(n, 0);

    // Process snowballs from west to east
    for (int i = 0; i < n; i++) {
        ll a = x[i] + mn;   // leftmost point this snowball ever reaches
        ll b = x[i] + mx;   // rightmost point this snowball ever reaches

        // Snow still exists only to the right of rightmost_covered
        ll start = max(a, rightmost_covered);
        if (start < b) {
            weight[i] = b - start;
            rightmost_covered = b;
        }
    }

    for (int i = 0; i < n; i++) {
        cout << weight[i] << '\n';
    }

    return 0;
}

• Subtask 1: 0 / 33
• Subtask 2: 0 / 67