initial commit

1850A To My Critics/1850A.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+using ll = long long;
+
+
+void solve()
+{
+    int a,b,c;
+    cin>>a>>b>>c;
+    if(a+b>=10)
+        cout<<"YES"<<endl;
+    else if(b+c>=10)
+        cout<<"YES"<<endl;
+    else if(a+c>=10)
+        cout<<"YES"<<endl;
+    else
+        cout<<"NO"<<endl;
+}
+
+int main()
+{
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int TC = 1;
+    cin >> TC;
+    cin.ignore();
+    while (TC--) solve();
+}

1851B Parity Sort/1851B.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+using ll = long long;
+
+
+void solve()
+{
+    int n;
+    cin>>n;
+    vector<int>v(n);
+    for(int i=0; i<n; ++i) cin>>v[i];
+    vector<int>v2;
+    v2=v;
+    sort(v2.begin(),v2.end());
+    bool possible=1;
+    for(int i=0; i<n; ++i)
+    {
+        if(v[i]%2==0 && v2[i]%2!=0)
+        {
+            possible=0;
+            break;
+        }
+        else if (v[i]%2!=0 && v2[i]%2==0)
+        {
+            possible=0;
+            break;
+        }
+    }
+    if(possible)
+        cout<<"YES"<<endl;
+    else
+        cout<<"NO"<<endl;
+}
+
+int main()
+{
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int TC = 1;
+    cin >> TC;
+    cin.ignore();
+    while (TC--) solve();
+}