I tried brut force but only passed few test case \nI used fast input output , and long long. \n\nplease help me to find solution .\n\nQ ) \n![image](https://assets.leetcode.com/users/images/e58e0b77-9623-4f42-8655-911fd3d079c3_1598589470.3469863.png)\n\n\nconstrain \n\n![image](https://assets.leetcode.com/users/images/09491cd7-61f3-4b86-b97b-b3825ad958ca_1598589503.3876705.png)\n\nsample i/o \n\n![image](https://assets.leetcode.com/users/images/a12722e0-7141-4c2d-ac4c-c292a99ecc4d_1598589536.0473065.png)\n\n\n

I tried brut force but only passed few test case \nI used fast input output , and long long. \n\nplease help me to find solution .\n\nQ ) \n\n\n\nconstrain \n\n