Create D.cpp

Author: SmitMangukiya

Codeforces_Contests/7_Round_674_Div_3/D.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+
+#define int long long
+#define ll long long
+#define pb push_back
+#define mp make_pair
+#define f(i,a,n) for(int i=a ; i<n ; i++)
+#define rf(i,n,a) for(int i=n ; i>=a ; i--)
+#define F first
+#define S second
+#define all(c) (c).begin(),(c).end()
+#define sz(v) (int)(v).size()
+#define fast ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
+
+typedef long double ld;
+typedef vector<int> vi;
+typedef pair<int,int> pii;
+typedef pair<pii,int> ppi;
+typedef vector<pii> vpi;
+
+const int inf = 1e9;
+const int inf64 = 1e18;
+const int MOD = inf + 7;
+
+
+void solve(){
+   int n;
+   cin >> n;
+
+   int a[n];
+   f(i,0,n) cin >> a[i];
+
+   set<int>s;
+   s.insert(0);
+
+   int ans = 0, sum = 0;
+   f(i,0,n){
+      sum += a[i];
+      if(s.find(sum) != s.end()){
+         s.clear();
+         ans++;
+         sum = a[i];
+         s.insert(0);
+      }
+      s.insert(sum);
+   }
+   cout << ans << "\n";
+}
+
+int32_t main(){
+   fast;
+   int t = 1;
+   // cin >> t;
+   while(t--)  solve();   
+}