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Author: Aiyaan-Mahajan

Problems/Mathematics/Day-01/sol/Aiyaan_Mahajan/Q1sol.cpp

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+/*
+DAY 1
+Q1 Who's Opposite?
+.*/
+
+typedef long long ll;
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int t;
+    cin>>t;
+    while(t--){
+       ll a, b, c;
+        cin >> a >> b >> c;
+
+        ll diff = abs(a - b);
+        ll n = 2 * diff;
+
+        if (diff==0 || max({a,b,c})> n){
+            cout << -1 << endl;
+        } else {
+            ll d = c + diff;
+            if (d > n) d -= n;
+            cout << d << endl;
+    }
+    }
+  return 0;
+}
+/*
+My submission : https://codeforces.com/contest/1560/submission/355307599
+*/