Submission #647030

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
647030	2022-10-01 12:35:40	borgar02	Sum Zero (RMI20_sumzero)	C++17	100 / 100	319 ms	18372 KiB

sumzero

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#include <bits/stdc++.h>
using namespace std;
unsigned seed = chrono :: system_clock :: now().time_since_epoch().count();
mt19937 rng(seed);
using ll = long long;
const int N = 4e5 + 5;
ll c[N];
ll dp[N];
const ll P1 = (1ll << 20) - 1, P2 = ((1ll << 20) - 1) << 20, P3 = ((1ll << 20) - 1) << 40;
int main()
{
    ios_base :: sync_with_stdio(false); cin.tie(0);
    int n, q;
    cin >> n;
    for(int i = 1; i <= n; i++)
        cin >> c[i];
    cin >> q;
    partial_sum(c + 1, c + n + 1, c + 1);
    set <ll> s;
    dp[n + 1] = n + 1;
    for(int i = n; i >= 0; i--) {
        auto it = s.lower_bound(c[i] << 20);
        if(it != s.end() && (*it >> 20) == c[i]) {
            ll val = *it & P1;
            dp[i] = min(val, dp[i + 1]);
            s.erase(it);
        } else dp[i] = dp[i + 1];
        s.insert(c[i] << 20 | i);
 
 
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• Subtask 1: 22 / 22
• Subtask 2: 39 / 39
• Subtask 3: 39 / 39