Merge pull request kothariji#567 from Source-404/source404

Added codeforces Deep_down_below.cpp

Author: kothariji

Greedy/(CODEFORCES) Deep_Down_Below.cpp

@@ -0,0 +1,38 @@
+#include <iostream>
+#include <bits/stdc++.h>
+using namespace std;
+ 
+#define int long long
+#define fast ios_base::sync_with_stdio(0); cin.tie(0);
+ 
+signed main(){
+    fast;
+    int t; cin>>t;
+    while(t--){
+        int n; cin>>n;
+        vector<pair<int,int>> power;
+        for(int i=0;i<n;i++){
+            int k; cin>>k;
+            vector<int> v(k);
+            int p=0,maxm=0;
+            for(int j=0;j<k;j++){
+                cin>>v[j];
+                if(v[j]-j>maxm){
+                    maxm=v[j]-j;
+                }
+            }
+            power.push_back(make_pair(maxm,k));
+        }
+        sort(power.begin(),power.end());
+        int l=0;
+        vector<int> final(n);
+        int minp=power[0].first;
+        for(int i=0;i<power.size();i++){
+            final[i]=power[i].first - l;
+            l+=power[i].second;
+            if(minp<final[i]) minp=final[i];
+        }
+        cout<<minp+1<<"\n";
+    }
+    return 0;
+}