Submission #1225653

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225653		Sir_Ahmed_Imran	Sum Zero (RMI20_sumzero)	C++17	61 / 100	268 ms	45444 KiB

sumzero

            //    01001100 01001111 01010100 01000001    \\
            //                                           \\
            //                ╦  ╔═╗╔╦╗╔═╗               \\
            //                ║  ║ ║ ║ ╠═╣               \\
            //                ╩═╝╚═╝ ╩ ╩ ╩               \\
            //                                           \\
            //    01001100 01001111 01010100 01000001    \\

#include <bits/stdc++.h>
using namespace std;
#define N 400001
#define nl '\n'
#define ff first
#define ss second
#define add insert
#define ll long long
#define ld long double
#define terminator main
#define pll pair<ll,ll>
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define L0TA ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)

ll a[N];
int x[N][19];
map<ll, int> p; 

void solve(){
    int n, q, l, r, ans;
    cin >> n;
    p[0] = 1;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        x[i][0] = n + 2;
        a[i] += a[i - 1];
        x[p[a[i]]][0] = i + 1;
        p[a[i]] = i + 1;
    }
    for(int i = n - 1; i > 0; i--)
        x[i][0] = min(x[i][0], x[i + 1][0]);
    for(int j = 0; j < 19; j++)
        x[n + 1][j] = x[n + 2][j] = n + 2;
    for(int j = 0; j < 18; j++)
        for(int i = 1; i <= n; i++)
            x[i][j + 1] = x[x[i][j]][j];
    cin >> q;
    while(q--){
        cin >> l >> r;
        r++;
        ans = 0;
        for(int i = 18; i >= 0; i--){
            if(x[l][i] <= r){
                ans += (1 << i);
                l = x[l][i];
            }
        }
        cout << ans << nl;
    }
}

int terminator(){
    L0TA;
    solve();
    return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 39 / 39
• Subtask 3: 0 / 39