added cses

cses/1071.cpp

@@ -0,0 +1,53 @@
+//URL -https://cses.fi/problemset/task/1071 
+//CSES
+#include <bits/stdc++.h>
+using namespace std;
+
+#ifdef LOCAL
+#define dbg(x) cerr << #x << " = " << x << endl
+#else
+#define dbg(x)
+#endif
+
+#define ll long long
+#define ld long double
+#define ar array
+#define all(x) (x).begin(), (x).end()
+#define sza(x) (int)(x).size()
+
+const ll INF = 1e18;
+const int MOD = 1e9 + 7;
+
+void solve() {
+    long long y,x;
+    cin>>y>>x;
+    long long ans = 0;
+    long long n = max(y,x);
+    if(n%2==0){
+        if(y==n){
+            ans = n*n-(x-1);
+
+        }else{
+            ans = (n-1)*(n-1)+y;
+        }
+    }
+    else{
+        if(x==n){
+            ans = n*n-(y-1);
+
+        }else{
+            ans = (n-1)*(n-1)+x;
+        }
+    }
+    cout<<ans<<"\n";
+}
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(NULL);
+
+    int tc = 1;
+     cin >> tc;
+    while(tc--) solve();
+}
+