View Compilation Error

0_0_30217480_1420.cpp: In function 'void dfs(int, double, int)':
0_0_30217480_1420.cpp:36:9: error: expected primary-expression before '%' token
    ans +%3
         ^
0_0_30217480_1420.cpp:36:10: error: expected '}' at end of input
    ans +%3
          ^
0_0_30217480_1420.cpp:36:10: error: expected '}' at end of input
0_0_30217480_1420.cpp:36:10: error: expected '}' at end of input