Page Contents
April Lunchtime 2021
Bench Press BENCHP Solution
In the gym, Chef prefers to lift at least W grams during a bench press and if that’s impossible, Chef considers his workout to be incomplete and feels bad.
The rod weighs Wr grams and there are N other weights lying on the floor that weigh w1,w2,…,wN grams. To maintain balance and to ensure that there is no unnecessary load due to torque, it’s important that the weights added to the left side are symmetric to the weights added to the right side. It is not required to use all of the weights. It is also not required to use any weights at all, if Chef feels satisfied lifting only the rod.
For example:
1 2 2 1 |Rod Center| 1 1 1 3 is a wrong configuration, but
1 2 3 1 |Rod Center| 1 3 2 1 is a right configuration.
Find whether Chef will be able to collect the required weights to feel satisfied.
Input
The first line contains an integer T, the number of test cases. Then the test cases follow.
Each test case contains two lines of input.
The first line contains three space-separated integers N,W,Wr.
The second line contains N space-separated integers w1,w2,…,wN.
Output
For each test case, output the answer in a single line: “YES” if Chef will be satisfied after his workout and “NO” if not (without quotes).
You may print each character of each string in uppercase or lowercase (for example, the strings “yEs”, “yes”, “Yes” and “YES” will all be treated as identical).
Constraints
1≤T≤10
1≤N≤105
1≤W≤2⋅105
1≤wi≤105
1≤Wr≤2⋅104
Subtasks
Subtask #1 (30 points): wi=1 for all valid i
Subtask #2 (70 points): original constraints
Sample Input
3
2 5 10
2 2
7 100 50
100 10 10 10 10 10 90
6 100 40
10 10 10 10 10 10
Sample Output
YES
NO
YES
Explanation
Test case 1: Since the weight of the rod is at least the required weight to be lifted, Chef will feel satisfied after the workout.
Test case 2: The configuration having maximum weight is:
10 10 |Rod Center| 10 10
So the maximum total weight Chef can lift is 50+4⋅10=90 which is less than the required amount to get satisfied.
Test case 3: The configuration having maximum weight is:
10 10 10 |Rod Center| 10 10 10
So the maximum total weight Chef can lift is 40+6⋅10=100 which is equal to the required amount to get satisfied.
April Long Challenge 2021 Solutions
- Chef and Dice SDICE Solution
- Worthy Matrix KAVGMAT Solution
- Binary String MEX MEXSTR Solution
- Boolean Game BOOLGAME Solution
- Tree Permutations TREEPERM Solution
- Destroy the EMP Chip CHAOSEMP Solution
- Chef and Pair Flips PAIRFLIP Solution
- String Power STRPOW Solution
- Brahma and Shiva SHRINES Solution
- Water Sort Puzzle (Challenge) WTRSORT Solution
- World Record BOLT Solution
- Strong Language SSCRIPT Solution
- Valid Pair SOCKS1 Solution
Codechef Long Challenge Solutions
February Long Challenge 2021
1. Frog Sort Solution Codechef
2. Chef and Meetings Solution Codechef
3. Maximise Function Solution Codechef
4. Highest Divisor Solution Codechef
5. Cut the Cake Challenge Solution Codechef
6. Dream and the Multiverse Solution Codechef
7. Cell Shell Solution Codechef
8. Multiple Games Solution Codechef
9. Another Tree with Number Theory Solution Codechef
10. XOR Sums Solution Codechef
11. Prime Game Solution CodeChef
12. Team Name Solution Codechef
January Long Challenge 2021
- Chef and Division 3 DIVTHREE SOLUTION Code Chef
- Encoded String DECODEIT SOLUTION Code Chef
- Point Of Impact BILLRD SOLUTION Code Chef
- Fair Elections FAIRELCT SOLUTION Code Chef
- Watching CPL WIPL SOLUTION Code Chef
- Chef and Ants ANTSCHEF SOLUTION Code Chef
- Blackjack BLKJK SOLUTION Code Chef
- And-Or Game ORAND SOLUTION Code Chef
- Stack-Queue Sort (Challenge) SQSORT SOLUTION Code Chef
- Expected Number of SCCs RCTEXSCC SOLUTION Code Chef
- Curious Matrix CURMAT SOLUTION Code Chef
- Cool Subsets COOLSBST SOLUTION Code Chef
- Sequence Creation ARCRT SOLUTION Code Chef
- Greedy Students GRDSTD SOLUTION Code Chef
November Challenge 2020 SOLUTION CodeChef
- Ada and Dishes SOLUTION ADADISH
- Iron Magnet and Wall SOLUTION FEMA2
- Magical Candy Store SOLUTION CNDYGAME
- Unusual Queries SOLUTION UNSQUERS
- Red-Black Boolean Expression SOLUTION RB2CNF
- Chef and the Combination Lock SOLUTION CHEFSSM
- Scalar Product Tree SOLUTION SCALSUM
- Connect on a Grid (Challenge) SOLUTION CONGRID
October Lunchtime 2020 CodeChef SOLUTIONS
- AND Plus OR SOLUTION ANDOR
- Chef and Subtree MEXs SOLUTION SUBMEXS
- Chef Likes Good Sequences SOLUTION GSUB
- Cute Chef Gift SOLUTION COPAR
- Chef Is Just Throwing Random Words SOLUTION SSO
- Counting Spaghetti SOLUTION CDSUMS
- Chef and Edge Flipping SOLUTION EFLIP
RELATED :
- Top Best Keylogger in Python 3 Make One
- What is Hacking?
- Secrets of the Deep Dark Web
- CODECHEF September Lunchtime 2020 SOLUTIONS
- August Lunchtime 2020 SOLUTIONS
Related :
- A. Shandom Ruffle SOLUTION
- B. Pear TreaP SOLUTION
- C. Sneetches and Speeches 3 SOLUTION
- D. The Grim Treaper SOLUTION
- Y. Sneetches and Speeches 1 SOLUTION
- Z. Trick or Treap SOLUTION
- A. Floor Number SOLUTION CODE FORCES
- B. Symmetric Matrix SOLUTION CODE FORCES
- C. Increase and Copy SOLUTION CODE FORCES
- D. Non-zero Segments SOLUTION CODE FORCES
- E. Rock, Paper, Scissors SOLUTION CODE FORCES
- F. Number of Subsequences SOLUTION CODE FORCES
Related :
- Chef and Easy Queries SOLUTIONS CHEFEZQ
- Covid Run SOLUTIONS CVDRUN OCTOBER CHALLENGE
- Positive AND SOLUTIONS POSAND
- Replace for X SOLUTIONS REPLESX
- Village Road Network SOLUTIONS VILLNET
- Random Knapsack SOLUTIONS RANDKNAP
- D-Dimensional MST SOLUTIONS DDIMMST
- Compress all Subsegments SOLUTIONS SEGCOMPR
- Adding Squares SOLUTIONS ADDSQURE
- Inversions SOLUTIONS INVSMOD2 OCOTBER CHALLENGE
- Rooted Minimum Spanning Tree SOLUTIONS ROOTMST