| [{"task_id": "mmlu-4724", "model": "openai/gpt-5.6-luna", "prompt": "[MMLU] A student decides that, having already spent three hours studying for an exam, she should spend one more hour studying for the same exam. Which of the following is most likely true?\nA) The marginal benefit of the fourth hour is certainly less than the marginal cost of the fourth hour.\nB) The marginal benefit of the fourth hour is at least as great as the marginal cost of the fourth hour.\nC) Without knowing the student\u2019s opportunity cost of studying, we have no way of knowing whether or not her marginal benefits outweigh her marginal costs.\nD) The marginal cost of the third hour was likely greater than the marginal cost of the fourth hour.\n\nAnswer with the letter only.", "response": "B", "cost_usd": 1.76e-05, "tokens_in": 146, "tokens_out": 5, "latency_s": 1.415}, {"task_id": "mmlu-4781", "model": "openai/gpt-5.6-luna", "prompt": "[MMLU] A solid plastic cube with uniform density (side length = 0.5 m) of mass 100 kg is placed in a vat of fluid whose density is 1200 kg/m^3. What fraction of the cube's volume floats above the surface of the fluid?\nA) 1.0/9\nB) 1.0/3\nC) 2.0/3\nD) 4.0/5\n\nAnswer with the letter only.", "response": "B", "cost_usd": 3.65e-05, "tokens_in": 107, "tokens_out": 43, "latency_s": 1.739}, {"task_id": "gsm8k-631", "model": "openai/gpt-5.6-luna", "prompt": "In a jewelers store, the price of a gold Jewell is 4/5 times as much as the price of a diamond Jewell. The cost of a silver Jewell is $400 less than the price of gold. If a diamond Jewell is $2000, find the total price for all three jewels.\n\nReason step by step, then give the final answer as a single number.", "response": "Diamond: $2000 \nGold: \\( \\frac{4}{5} \\times 2000 = 1600 \\) \nSilver: \\(1600 - 400 = 1200\\) \nTotal: \\(2000 + 1600 + 1200 = 4800\\)\n\n4800", "cost_usd": 8.67e-05, "tokens_in": 87, "tokens_out": 130, "latency_s": 2.643}, {"task_id": "gsm8k-293", "model": "openai/gpt-5.6-luna", "prompt": "Three friends: Mike, Jim, and Tony decided to play a game. After 3 rounds Mike has 21 points, Jim 3 points less than Mike, and Tony 2 times more than Mike. In the fourth round, every player gets an extra point if they have over 20 points. How many points do all three players have in total after the extra points had been distributed?\n\nReason step by step, then give the final answer as a single number.", "response": "1. Mike has 21 points.\n2. Jim has \\(21 - 3 = 18\\) points.\n3. Tony has \\(2 \\times 21 = 42\\) points.\n4. Mike and Tony each have over 20 points, so each gets 1 extra point.\n5. Total: \\((21+1) + 18 + (42+1) = 83\\).\n\n83", "cost_usd": 0.000127, "tokens_in": 100, "tokens_out": 195, "latency_s": 1.992}, {"task_id": "lcb-abc388_a", "model": "openai/gpt-5.6-luna", "prompt": "You are given a string S. Here, the first character of S is an uppercase English letter, and the second and subsequent characters are lowercase English letters.\nPrint the string formed by concatenating the first character of S and UPC in this order.\n\nInput\n\nThe input is given from Standard Input in the following format:\nS\n\nOutput\n\nPrint the string formed by concatenating the first character of S and UPC in this order.\n\nConstraints\n\n\n- S is a string of length between 1 and 100, inclusive.\n- The first character of S is an uppercase English letter.\n- The second and subsequent characters of S are lowercase English letters.\n\nSample Input 1\n\nKyoto\n\nSample Output 1\n\nKUPC\r\n\nThe first character of Kyoto is K, so concatenate K and UPC, and print KUPC.\n\nSample Input 2\n\nTohoku\n\nSample Output 2\n\nTUPC\n\nWrite a complete Python 3 program that reads from standard input and writes the answer to standard output. Output ONLY the program source, no prose and no code fences.", "response": "import sys\n\ns = sys.stdin.readline().strip()\nprint(s[0] + \"UPC\")", "cost_usd": 3.6300000000000015e-05, "tokens_in": 219, "tokens_out": 24, "latency_s": 1.012}, {"task_id": "lcb-abc392_d", "model": "openai/gpt-5.6-luna", "prompt": "There are N dice.\r\nThe i-th die has K_i faces, with the numbers A_{i,1}, A_{i,2}, \\ldots, A_{i,K_i} written on them.\r\nWhen you roll this die, each face appears with probability \\frac{1}{K_i}.\nYou choose two dice from the N dice and roll them.\r\nDetermine the maximum probability that the two dice show the same number, when the dice are chosen optimally.\n\nInput\n\nThe input is given from Standard Input in the following format:\nN\r\nK_1 A_{1,1} A_{1,2} \\dots A_{1,K_1}\r\n\\vdots\r\nK_N A_{N,1} A_{N,2} \\dots A_{N,K_N}\n\nOutput\n\nPrint the answer.\r\nYour answer is considered correct if the absolute or relative error from the true solution does not exceed 10^{-8}.\n\nConstraints\n\n\n- 2 \\leq N \\leq 100\n- 1 \\leq K_i\n- K_1 + K_2 + \\dots + K_N \\leq 10^5\n- 1 \\leq A_{i,j} \\leq 10^5\n- All input values are integers.\n\nSample Input 1\n\n3\r\n3 1 2 3\r\n4 1 2 2 1\r\n6 1 2 3 4 5 6\n\nSample Output 1\n\n0.333333333333333\r\n\n\n- When choosing the 1st and 2nd dice, the probability that the outcomes are the same is \\frac{1}{3}.\n- When choosing the 1st and 3rd dice, the probability is \\frac{1}{6}.\n- When choosing the 2nd and 3rd dice, the probability is \\frac{1}{6}.\n\nTherefore, the maximum probability is \\frac{1}{3} = 0.3333333333\\ldots.\n\nSample Input 2\n\n3\r\n5 1 1 1 1 1\r\n4 2 2 2 2\r\n3 1 1 2\n\nSample Output 2\n\n0.666666666666667\n\nWrite a complete Python 3 program that reads from standard input and writes the answer to standard output. Output ONLY the program source, no prose and no code fences.", "response": "import sys\nfrom collections import Counter, defaultdict\n\ndef main():\n data = list(map(int, sys.stdin.buffer.read().split()))\n n = data[0]\n pos = 1\n\n value_dice = defaultdict(list)\n\n for i in range(n):\n k = data[pos]\n pos += 1\n counts = Counter(data[pos:pos + k])\n pos += k\n inv_k = 1.0 / k\n for value, count in counts.items():\n value_dice[value].append((i, count * inv_k))\n\n scores = [[0.0] * n for _ in range(n)]\n\n for entries in value_dice.values():\n m = len(entries)\n for a in range(m):\n i, pi = entries[a]\n for b in range(a + 1, m):\n j, pj = entries[b]\n scores[i][j] += pi * pj\n\n answer = 0.0\n for i in range(n):\n for j in range(i + 1, n):\n if scores[i][j] > answer:\n answer = scores[i][j]\n\n print(\"{:.15f}\".format(answer))\n\nif __name__ == \"__main__\":\n main()\n", "cost_usd": 0.0005203999999999999, "tokens_in": 506, "tokens_out": 783, "latency_s": 9.153}] |