From d47a71266036ac3f7dd062c4cf3fddaa0e08660b Mon Sep 17 00:00:00 2001
From: abhi <abhi@abhi.8.8.8.8>
Date: Wed, 25 Oct 2017 00:59:11 -0600
Subject: [PATCH] added STRINGRA (AUG17) [CPP]\nFixes #225 :pray: rathi

---
 2017/AUG.md                          |  2 +-
 2017/AUG/AUG17/STRINGRA/stringra.cpp | 94 ++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+), 1 deletion(-)
 create mode 100644 2017/AUG/AUG17/STRINGRA/stringra.cpp

diff --git a/2017/AUG.md b/2017/AUG.md
index d2640c7..944b26d 100644
--- a/2017/AUG.md
+++ b/2017/AUG.md
@@ -14,7 +14,7 @@
 | [AUG17](https://www.codechef.com/AUG17) | [GCAC](https://www.codechef.com/AUG17/problems/GCAC) | ★★★ | | [![image](../img/GH.png)](AUG/AUG17/GCAC/GCAC.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14947059) (100 pts) [![image](../img/AC.png)](#) | | |
 | [AUG17](https://www.codechef.com/AUG17) | [PALINGAM](https://www.codechef.com/AUG17/problems/PALINGAM) | ★★★ | | [![image](../img/GH.png)](AUG/AUG17/PALINGAM/PALINGAM.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14908284) (100 pts) [![image](../img/AC.png)](#) | | |
 | [AUG17](https://www.codechef.com/AUG17) | [CHEFFA](https://www.codechef.com/AUG17/problems/CHEFFA) | ★★★★ | | | | |
-| [AUG17](https://www.codechef.com/AUG17) | [STRINGRA](https://www.codechef.com/AUG17/problems/STRINGRA) | ★★★★ | | | | |
+| [AUG17](https://www.codechef.com/AUG17) | [STRINGRA](https://www.codechef.com/AUG17/problems/STRINGRA) | ★★★★ | | [![image](../img/GH.png)](AUG/AUG17/STRINGRA/STRINGRA.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14982151) (100 pts) [![image](../img/AC.png)](#) | | |
 | [AUG17](https://www.codechef.com/AUG17) | [MATDW](https://www.codechef.com/AUG17/problems/MATDW) | ★★★★ | | | | |
 | [AUG17](https://www.codechef.com/AUG17) | [HILLJUMP](https://www.codechef.com/AUG17/problems/HILLJUMP) | ★★★★★ | | [![image](../img/GH.png)](AUG/AUG17/HILLJUMP/HILLJUMP.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14996982) (100 pts) [![image](../img/AC.png)](#) | | |
 | [AUG17](https://www.codechef.com/AUG17) | [WALKBT](https://www.codechef.com/AUG17/problems/WALKBT) | ★★★★★ | | | | |
diff --git a/2017/AUG/AUG17/STRINGRA/stringra.cpp b/2017/AUG/AUG17/STRINGRA/stringra.cpp
new file mode 100644
index 0000000..10eaa96
--- /dev/null
+++ b/2017/AUG/AUG17/STRINGRA/stringra.cpp
@@ -0,0 +1,94 @@
+#include <bits/stdc++.h>
+ 
+using namespace std;
+ 
+int main(){
+    int t;
+    cin>>t;
+    while(t--){	
+    	int n,m;
+        
+        cin>>n>>m;
+        vector<int> ad[n+1];
+        while(m--){	
+        	int a,b;
+            
+            cin>>a>>b;
+            
+           	if(a<b){
+                ad[a].push_back(b);
+           	}
+        }
+ 
+        int arr[n+1]={-1,0};
+        int  edges = ad[0].size();
+        int inital[edges+1];
+        for(int i=1;i<=edges;i++){
+            inital[i] = INT_MAX;
+        }
+        
+        sort(ad[0].begin(),ad[0].end());
+        
+        for(int i=0;i<ad[0].size();i++){
+            arr[ad[0][i]] = i+1;
+            inital[i+1] = ad[0][i];
+        }
+        
+        bool avai[edges+1];
+        memset(avai,1,edges+1);
+ 
+        for(int i=1;i<n;i++){
+            int temp = -1, idx;
+            if(ad[i].size()>edges||ad[i].size()==0){
+            		goto re;
+            	}
+            
+            for(int j=0;j<ad[i].size();++j){
+                idx = ad[i][j];
+                if(arr[idx]==0){
+                    if(temp==-1){
+                        temp = idx;
+                    }
+                    
+                    else
+                        goto re;
+            	}
+            }
+            if(temp!=-1){
+                for(int k=1;k<=edges;k++){
+                    if(avai[k]&&inital[k]<=i){
+                        arr[temp] = k;
+                        inital[k] = temp;
+                        break;
+                    }
+                }
+            }
+            
+            memset(avai,0,edges+1);
+            
+            for(int j=0;j<ad[i].size();j++) {
+                avai[arr[ad[i][j]]]=1;
+            }
+        }
+        
+        for(int i=0;i<=n;i++){
+            int count = 0;
+            for(int j=1;j<=edges;++j){
+                if(inital[j]>i){
+                    ++count;
+                }
+            }
+            if(count!=ad[i].size()){
+                goto re;
+            }
+        }
+        for(int i=1;i<=n;i++){
+        	cout<<arr[i]<<' ';
+        }
+ 
+        cout<<endl;
+        continue;
+        re:;
+        cout<<-1<<endl;
+    }
+} 
\ No newline at end of file