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Author: Pankajcoder1

best_approach/sum_of_all_subset_of_set.cpp

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+/*
+	written by Pankaj Kumar.
+	country:-INDIA
+*/
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll ;
+typedef set<pair<int,int>> spi;
+typedef set<pair<ll,ll>> spl;
+typedef vector<pair<int,int>> vpi;
+typedef vector<int> vi;
+typedef vector<ll> vl;
+typedef vector<bool> vb;
+typedef vector<char> vc;
+typedef vector<pair<ll,ll>> vpl;
+typedef vector<string> vs;
+typedef map<int,int>mi;
+typedef map<ll,ll> ml;
+typedef set<string> ss;
+typedef set<char>sc;
+typedef set<int> si;
+typedef set<ll> sl;
+#define pan cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(0);
+// define values.
+#define mod 1000000007
+#define phi 1.618
+/* Bit-Stuff */
+#define get_set_bits(a) (__builtin_popcount(a))
+#define get_set_bitsll(a) ( __builtin_popcountll(a))
+#define get_trail_zero(a) (__builtin_ctz(a))
+#define get_lead_zero(a) (__builtin_clz(a))
+#define get_parity(a) (__builtin_parity(a))
+/*  Abbrevations  */
+#define ff first
+#define ss second
+#define mp make_pair
+#define line cout<<endl;
+#define pb push_back
+#define Endl "\n"
+// loops
+#define loop(i,start,end) for(ll i=ll(start);i<ll(end);i++)
+#define loop0(num) for(ll i=0;i<ll(num);i++)
+#define forin(arr,n) for(ll i=0;i<n;i++) cin>>arr[i];
+// Some print
+#define no cout<<"NO"<<endl;
+#define yes cout<<"YES"<<endl;
+#define cc ll test;cin>>test;while(test--)
+// sort
+#define all(V) (V).begin(),(V).end()
+#define srt(V) sort(all(V))
+#define srtGreat(V) sort(all(V),greater<ll>())
+// function
+
+ll power(ll x,ll y)
+{
+	ll res=1;
+	while(y>0)
+	{
+		if(y%2==1)res*=x;
+		y/=2; x*=x;
+	}
+	return res;
+}
+/* ascii value 
+A=65,Z=90,a=97,z=122
+*/
+/*  -----------------------------------------------------------------------------------*/
+
+
+int main()
+{
+	ll n;
+	cin>>n;
+	vl v(n,0);
+	forin(v,n);
+	ll total=1<<n;
+	loop(i,0,total)
+	{
+		ll sum=0;
+		loop(j,0,n)
+		{
+			if(i&(1<<j))
+				sum+=v[j];
+		}
+		cout<<"sum is "<<sum<<endl;
+	}
+}