{"trustable":true,"sections":[{"title":"","value":{"format":"HTML","content":"\u003chtml\u003e\n \u003chead\u003e\u003c/head\u003e\n \u003cbody\u003e\n \u003cdiv\u003e\n Bobo has a n digits decimal number D\u003dd\n \u003csub\u003e1\u003c/sub\u003e d\n \u003csub\u003e2\u003c/sub\u003e…d\n \u003csub\u003en\u003c/sub\u003e (It may have leading zeros). \n \u003c/div\u003e \n \u003cdiv\u003e\n Let R(i,j) denotes number D with digits between the i-th position and j-th position reversed. That is, R(i,j)\u003dd\n \u003csub\u003e1\u003c/sub\u003e…d\n \u003csub\u003ei-1\u003c/sub\u003e\u0026nbsp;d\n \u003csub\u003ej\u003c/sub\u003e d\n \u003csub\u003ej-1\u003c/sub\u003e…d\n \u003csub\u003ei\u003c/sub\u003e d\n \u003csub\u003ej+1\u003c/sub\u003e\u0026nbsp;d\n \u003csub\u003ej+2\u003c/sub\u003e…d\n \u003csub\u003en\u003c/sub\u003e. \n \u003c/div\u003e \n \u003cdiv\u003e\n Bobo would like to find \n \u003c/div\u003e \n \u003cdiv\u003e \n \u003cimg SRC\u003d\"CDN_BASE_URL/a719d06c66585e876724436c39dfe1a7?v\u003d1591890733\" width\u003d\"182\" height\u003d\"92\" alt\u003d\"\"\u003e \n \u003c/div\u003e \n \u003cdiv\u003e\n modulo (10\n \u003csup\u003e9\u003c/sup\u003e+7). \n \u003c/div\u003e\n \u003c/body\u003e\n\u003c/html\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003chtml\u003e\n \u003chead\u003e\u003c/head\u003e\n \u003cbody\u003e\n \u003cdiv\u003e\n The input contains at most 30 sets. For each set: \n \u003c/div\u003e \n \u003cdiv\u003e\n The first line contains an integer n (1≤n≤10\n \u003csup\u003e5\u003c/sup\u003e). \n \u003c/div\u003e \n \u003cdiv\u003e\n The second line contains n digits d\n \u003csub\u003e1\u003c/sub\u003e d\n \u003csub\u003e2\u003c/sub\u003e…d\n \u003csub\u003en\u003c/sub\u003e (0≤d\n \u003csub\u003ei\u003c/sub\u003e≤9). \n \u003c/div\u003e\n \u003c/body\u003e\n\u003c/html\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003chtml\u003e\n \u003chead\u003e\u003c/head\u003e\n \u003cbody\u003e\n \u003cdiv\u003e\n For each set, an integer denotes the result. \n \u003c/div\u003e\n \u003c/body\u003e\n\u003c/html\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e2\n12\n3\n012\n10\n0123456789\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e45\n369\n733424314\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003chtml\u003e\n \u003chead\u003e\u003c/head\u003e\n \u003cbody\u003e\u003c/body\u003e\n\u003c/html\u003e"}}]}