Submission #1159397

#	Time	Username	Problem	Language	Result	Execution time	Memory
1159397		bilalco	Sum Zero (RMI20_sumzero)	C++20	0 / 100	458 ms	504 KiB

sumzero

#include <bits/stdc++.h>


using namespace std;

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,fma")

using ll = long long;

template<typename... T>
void see(T&... args) { ((cin >> args), ...);}
#define seea(a , x , y) for(int i = x; i < y; i++){cin >> a[i];}
#define sees(s , n) for(int i = 0;i < n; i++){int x; cin >> x; s.insert(x);}
#define seev(v , n) for(int i = 0;i < n; i++){int x; cin >> x; v.push_back(x);}
#define ub(a, x) upper_bound(all(a), x)
#define lb(a, x) lower_bound(all(a), x)
#define rall(x) x.rbegin(), x.rend()
#define all(x) x.begin(), x.end()
#define pii pair<int , int>
#define sz(x) (int)x.size()
#define pq priority_queue
#define vec vector
#define arr array

const ll inf = 1e18;
const int N = 2e5 + 5; const short lg = 20;

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

void solve() {
    // Code here
    int n;
    see(n);
    vec<int> a;
    seev(a , n);
    vec<int> pf(n + 1 , 0);
    for (int i = 0; i < n; i++)
        pf[i + 1] = pf[i] + a[i];
    int q;
    see(q);
    while(q--){
        int l , r;
        see(l , r);
        int cnt = 0;
        for (int i = l; i <= r; i++){
            for (int j = i; j <= r; j++){
                if (pf[j] - pf[i - 1] == 0){
                    cnt++;
                    i = j;
                }
            }
        }
        cout << cnt << "\n";
    }
    return;
}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    // setIO("");
        solve();
}

Compilation message (stderr)

sumzero.cpp: In function 'void setIO(std::string)':
sumzero.cpp:31:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sumzero.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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