Submission #961616

#	Time	Username	Problem	Language	Result	Execution time	Memory
961616		vjudge1	Sum Zero (RMI20_sumzero)	C++17	61 / 100	48 ms	11880 KiB

sumzero

// author : HuuHung
// 25.3.2024


#include <bits/stdc++.h>
#define ii pair <int, int>
#define F first
#define S second
#define ll long long
#define lb long double
#define pb push_back
#define vi vector <int>
#define vll vector <ll>
#define Bit(x, i) ((x) >> (i) & 1)
#define Mask(i) (1ll << (i))
#define All(v) (v).begin(), (v).end()

using namespace std;

void maxzi(auto &a, auto b){
    a = max(a, b);
}

void minzi(auto &a, auto b){
    a = min(a, b);
}

const int N = 2e5 + 5;
const int mod = 1e9 + 7;
const int LG = 20;

void add(auto &a, auto b){
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

auto Pow(auto a, auto b){
    if (b == 0) return 1;
    if (b % 2) return 1ll * a * Pow(a, b - 1) % mod;
    auto c = Pow(a, b / 2);
    return 1ll * c * c % mod;
}

// * end

int jump[N], p[N], level[N];
unordered_map<ll, int> f;
void solve(){
    ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    int n;
    cin >> n;
    ll tot = 0;
    int mx = -1;
    level[0] = 1;
    for(int i = 1; i <= n; i++) {
        int a; cin >> a;
        tot += a;
        if(f[tot] || !tot) mx = max(mx, f[tot]);
        f[tot] = i;
        p[i] = mx;
        if(mx == -1) level[i] = 1;
        else
        level[i] = level[p[i]] + 1;
        if(mx >= 0 && level[p[i]] - level[jump[p[i]]] ==  level[jump[p[i]]] - level[jump[jump[p[i]]]]) jump[i] = jump[jump[p[i]]];
        else jump[i] = p[i];
    }
    int q;
    cin >> q;
    while(q--) {
        int l, r;
        cin >> l >> r;
        int ans = 0; --l;
        while(r) {
            if(p[r] < l) break;
            if(jump[r] >= l) ans += level[r] - level[jump[r]], r = jump[r];
            else ans++, r = p[r];
        }
        cout << ans << "\n";
    }
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t = 1;
    while (t --) solve();

    return 0;
}

Compilation message (stderr)

sumzero.cpp:20:12: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   20 | void maxzi(auto &a, auto b){
      |            ^~~~
sumzero.cpp:20:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   20 | void maxzi(auto &a, auto b){
      |                     ^~~~
sumzero.cpp:24:12: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void minzi(auto &a, auto b){
      |            ^~~~
sumzero.cpp:24:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void minzi(auto &a, auto b){
      |                     ^~~~
sumzero.cpp:32:10: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   32 | void add(auto &a, auto b){
      |          ^~~~
sumzero.cpp:32:19: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   32 | void add(auto &a, auto b){
      |                   ^~~~
sumzero.cpp:38:10: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   38 | auto Pow(auto a, auto b){
      |          ^~~~
sumzero.cpp:38:18: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   38 | auto Pow(auto a, auto b){
      |                  ^~~~

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