Adding Competitive-Programming Files

110A - Nearly Lucky Number.cpp

@@ -0,0 +1,49 @@
+//MD. HASNAIN ALI (UNSOLVED)
+#include<bits/stdc++.h>
+using namespace std;
+
+#pragma GCC             optimize ("Ofast")
+#pragma GCC             optimize("O3")
+#define ll              long long
+#define lo(i,a,n,x)      for(i=a;i<=n;i=i+x)
+#define sca(n)          scanf("%lld", &n)
+#define pri(n)          printf("%lld", n)
+#define SORT(x)         sort(x.begin(), x.end())
+#define REV(x)          reverse(x.begin(), x.end())
+#define all(x)          x.begin(), x.end()
+#define distance(a,b)   (sq(a.x-b.x) + sq(a.y-b.y))
+#define end0            "\n"
+#define end1            cout<<"\n";
+#define pi              acos(-1)
+#define mod             1000000007
+#define inf             999999999999999999
+#define eps             10e-9
+
+
+
+
+
+int main()
+{
+    ios::sync_with_stdio(0);
+    cin.tie(0), cout.tie(0);
+	//freopen("test.txt","r",stdin);
+
+
+    string x;
+    int l,a,b;
+    cin>>x;
+    a=count(all(x),'4');
+    b=count(all(x),'7');
+    l=a+b;
+    if(l==4||l==7){
+        cout<<"YES"<<end0;
+    }
+    else cout<<"NO"<<end0;
+
+
+
+
+    return 0;
+}
+

1382B - Sequential Nim.cpp

@@ -0,0 +1,73 @@
+//MD. HASNAIN ALI (UNSOLVED)
+#include<bits/stdc++.h>
+using namespace std;
+
+#pragma GCC               optimize ("Ofast")
+#pragma GCC               optimize("O3")
+#define ll                long long
+#define lo(i,a,n,x)       for(i=a;i<=n;i=i+x)
+#define loi(i,a,n,x)      for(i=a;i>=n;i=i-x) 
+#define sca(n)            scanf("%lld", &n)
+#define pri(n)            printf("%lld", n)
+#define pb(a)             push_back(a)
+#define pop()             pop_back()
+#define mp                make_pair
+#define ff                first
+#define ss                second
+#define sqr(x)            (x)*(x)
+#define VI                vector <int>
+#define SZ(a)             (int)a.size()
+#define SORT(x)           sort(x.begin(), x.end())
+#define REV(x)            reverse(x.begin(), x.end())
+#define UNIQUE(v)         (v).erase(unique((v).begin(),(v).end()),(v).end())
+#define all(x)            x.begin(), x.end()
+#define ODD(x)            ((x)&1)==0?(0):(1)
+#define TEST_CASE(t)      for(int z=1;z<=t;z++)
+#define distance(a,b)     (sq(a.x-b.x) + sq(a.y-b.y))
+#define gcd(a, b)         __gcd(a, b)
+#define lcm(a, b)         (a)*((b)/gcd(a,b))
+#define end0              "\n"
+#define end1              cout<<"\n";
+#define pi                acos(-1)
+#define mod               1000000007
+#define inf               999999999999999999
+#define eps               10e-9
+
+
+
+
+
+int main()
+{
+    ios::sync_with_stdio(0);
+    cin.tie(0), cout.tie(0);
+	//freopen("test.txt","r",stdin);
+
+    ll t,i,j,n,a,b;
+    cin>>t;
+    TEST_CASE(t){
+        cin>>n;
+        int x[n];
+        lo(i,0,n-1,1){
+            cin>>x[i];
+        }
+        i=0;
+        a=0;
+        while(x[i]==1){
+            a++;
+            i++;
+        }
+
+        if(a==n){
+            if(a%2==0) cout<<"Second"<<end0;
+            else cout<<"First"<<end0;
+        }
+        else{
+            if(a%2==0) cout<<"First"<<end0;
+            else cout<<"Second"<<end0;
+        }
+    }
+
+
+    return 0;
+}

200B - Drinks.cpp

@@ -0,0 +1,57 @@
+//MD. HASNAIN ALI (UNSOLVED)
+#include<bits/stdc++.h>
+using namespace std;
+
+#pragma GCC               optimize ("Ofast")
+#pragma GCC               optimize("O3")
+#define ll                long long
+#define lo(i,a,n,x)       for(i=a;i<=n;i=i+x)
+#define loi(i,a,n,x)      for(i=a;i>=n;i=i-x) 
+#define sca(n)            scanf("%lld", &n)
+#define pri(n)            printf("%lld", n)
+#define pb(a)             push_back(a)
+#define pop()             pop_back()
+#define mp                make_pair
+#define ff                first
+#define ss                second
+#define sqr(x)            (x)*(x)
+#define VI                vector <int>
+#define SZ(a)             (int)a.size()
+#define SORT(x)           sort(x.begin(), x.end())
+#define REV(x)            reverse(x.begin(), x.end())
+#define UNIQUE(v)         (v).erase(unique((v).begin(),(v).end()),(v).end())
+#define all(x)            x.begin(), x.end()
+#define ODD(x)            ((x)&1)==0?(0):(1)
+#define TEST_CASE(t)      for(int z=1;z<=t;z++)
+#define distance(a,b)     (sq(a.x-b.x) + sq(a.y-b.y))
+#define gcd(a, b)         __gcd(a, b)
+#define lcm(a, b)         (a)*((b)/gcd(a,b))
+#define end0              "\n"
+#define end1              cout<<"\n";
+#define pi                acos(-1)
+#define mod               1000000007
+#define inf               999999999999999999
+#define eps               10e-9
+
+
+
+
+
+int main()
+{
+    ios::sync_with_stdio(0);
+    cin.tie(0), cout.tie(0);
+	//freopen("test.txt","r",stdin);
+
+    int n,a,i,b=0;
+    cin>>n;
+    for(i=0;i<n;i++){
+        cin>>a;
+        b+=a;
+    }
+    n*=100;
+    cout<<fixed<<setprecision(10)<<100*((double)b/n)<<end0;
+
+
+    return 0;
+}