Submission #1127305

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127305		OI_Account	Bitaro, who Leaps through Time (JOI19_timeleap)	C++20	4 / 100	3093 ms	4816 KiB

timeleap

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

typedef long long ll;

const int N = 300'000;

int n, q;
ll l[N + 10], r[N + 10];

void readInput() {
    cin >> n >> q;
    for (int i = 1; i < n; i++)
        cin >> l[i] >> r[i];
}

void queryChange() {
    int idx;
    cin >> idx;
    cin >> l[idx] >> r[idx];
}

ll calcAns(int a, ll b, int c, ll d) {
    if (a == c)
        return max(0ll, b - d);
    int nxt = (a < c? a + 1: a - 1);
    int edge = min(a, nxt);
    if (b < l[edge]) 
        return calcAns(nxt, l[edge] + 1, c, d);
    if (r[edge] <= b)
        return calcAns(nxt, r[edge], c, d) + b - r[edge] + 1;
    return calcAns(nxt, b + 1, c, d);
}

void queryGet() {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    cout << calcAns(a, b, c, d) << '\n';
}

void solve() {
    while (q--) {
        int type;
        cin >> type;
        if (type == 1)
            queryChange();
        else
            queryGet();
    }
    cout.flush();
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    readInput();
    solve();
    return 0;
}

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