Submission #690024

#	Time	Username	Problem	Language	Result	Execution time	Memory
690024		moonhero	Trading (IZhO13_trading)	C++17	0 / 100	128 ms	588 KiB

trading

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 3e5 + 5;
ll r[N * 4], tc[N * 4], u[N * 4];
void push (int v, int tl, int tr) {
    if (u[v]) {
        int tm = (tl + tr) / 2;
        // cout << tl << ' ' << tr << ' ' << u[v] << '\n';
        // if (tm == tl) {
        //     // cout << tl << '\n';
        //     r[v * 2] = max(r[v * 2], u[v]);
        // } 
        // if (tm + 1 == tr) {
        //     // cout << tr << '\n';
        //     r[v * 2 + 1] = max(r[v * 2 + 1], u[v] + 1);
        // } 
        u[v * 2] = u[v], u[v * 2 + 1] = u[v] + (tm - tl + 1);
        u[v] = 0, tc[v] = 0;
    }
}
void upd (int v, int tl, int tr, int l, int r, ll val) {
    if (tl >= l && tr <= r) {
        // cout << tl << ' ' << tr << ' ' << val + tl - l << '\n';
        tc[v]++, u[v] = max(u[v], val + tl - l);
        return;
    } if (tl > r || tr < l) return;
    int tm = (tl + tr) / 2;
    push(v, tl, tr);
    upd(v * 2, tl, tm, l, r, val);
    upd(v * 2 + 1, tm + 1, tr, l, r, val);
} 
void out (int v, int tl, int tr) {
    if (tl == tr) {
        cout << u[v] << ' ';
        return;
    } int tm = (tl + tr) / 2;
    push(v, tl, tr);
    out(v * 2, tl, tm);
    out(v * 2 + 1, tm + 1, tr);
}
int main () {
    freopen("trading.in", "r", stdin);
    freopen("trading.out", "w", stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int t = 1; //cin >> t;
    while (t--) {
        int n; cin >> n;
        for (int i = 0; i <= n * 4; i++) r[i] = 0, u[i] = 0, tc[i] = 0;
        int q; cin >> q;
        while (q--) {
            int l, r, x; cin >> l >> r >> x;
            upd(1, 1, n, l, r, x);
        } out(1, 1, n);
    }
}

Compilation message (stderr)

trading.cpp: In function 'int main()':
trading.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen("trading.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
trading.cpp:44:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |     freopen("trading.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100