Submission #1234164

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234164		antonn	Bitaro, who Leaps through Time (JOI19_timeleap)	C++20	4 / 100	3094 ms	4908 KiB

timeleap

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 3e5 + 7;

int n, q, l[N], r[N], l2[N], r2[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> q;
    for (int i = 1; i < n; ++i) cin >> l[i] >> r[i], r[i]--;
    for (int i = 1; i < n; ++i) l2[i] = l[i] + i + 1, r2[i] = r[i] + i + 1;
    for (int i = 1; i < n; ++i) l[i] -= i, r[i] -= i;
    while (q--) {
        int t;
        cin >> t;
        if (t == 1) {
            int p, s, e;
            cin >> p >> s >> e;
            --e;
            l[p] = s - p;
            r[p] = e - p;
            
            l2[p] = s + p + 1;
            r2[p] = e + p + 1;
        } else {
            int a, b, c, d;
            cin >> a >> b >> c >> d;
            if (a < c) {
                int t = b - a;
                ll ans = 0;
                for (int i = a; i < c; ++i) {
                    if (t > r[i]) {
                        ans += t - r[i];
                        t = r[i];
                    } else {
                        t = max(t, l[i]);
                    }
                }
                ans += max(0, t - (d - c));
                cout << ans << "\n";
            } else {
                int t = b + a;
                ll ans = 0;
                for (int i = a - 1; i >= c; --i) {
                    if (t > r2[i]) {
                        ans += t - r2[i];
                        t = r2[i];
                    } else {
                        t = max(t, l2[i]);
                    }
                }
                ans += max(0, t - (d + c));
                cout << ans << "\n";
            }
        }
    }
    return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 30
• Subtask 3: 0 / 66