Submission #384847

#	Time	Username	Problem	Language	Result	Execution time	Memory
384847		kostia244	Bitaro, who Leaps through Time (JOI19_timeleap)	C++17	4 / 100	65 ms	7916 KiB

timeleap

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 3e5 + 69;
int n, q;
array<int, 2> r[maxn];
void gate(int &x, ll &ans, int l, int r) {
    if(x > r) {
        ans += x-r;
        x = r;
    }
    if(x < l) {
        x = l;
    }
}
void naive() {
    for(int t, a, b, c, d; q--;) {
        cin >> t >> a >> b >> c;
        if(t == 1) {
            --a;
            r[a] = {b, c-1};
        } else {
            cin >> d;
            a--, c--;
            ll ans = 0;
            if(a <= c) {
                b -= a;
                d -= c;
                for(int i = a; i < c; i++) {
                    gate(b, ans, r[i][0]-i, r[i][1]-i);
                   // cout << i << " " << b << " " << ans << endl;
                }
            } else {
                b += a;
                d += c;
                //cout << b << " " << a << endl;
                for(int i = a-1; i >= c; i--) {
                    //cout << b << " with " << r[i][0]+i << " " << r[i][1]+i << endl;
                    gate(b, ans, r[i][0]+i+1, r[i][1]+i+1);
                    //cout << i << " " << b << " " << ans << endl;
                }
            }
            ans += max(0, b-d);
            cout << ans << '\n';
        }
    }
}
signed main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> q;
    for(int i = 0; i+1 < n; i++) {
        cin >> r[i][0] >> r[i][1];
        r[i][1]--;
        //r[i][0] -= i, r[i][1] -= i;
    }
    if(max(n, q) <= 1000) naive();
}

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