View Compilation Error

0_0_13309286_8956.cpp: In function 'int main()':
0_0_13309286_8956.cpp:68:23: error: no match for 'operator=' (operand types are 'sum' and 'int')
                 dp[i] = a[i];
                       ^
0_0_13309286_8956.cpp:68:23: note: candidates are:
0_0_13309286_8956.cpp:10:8: note: sum& sum::operator=(const sum&)
 struct sum{
        ^
0_0_13309286_8956.cpp:10:8: note:   no known conversion for argument 1 from 'int' to 'const sum&'
0_0_13309286_8956.cpp:10:8: note: sum& sum::operator=(sum&&)
0_0_13309286_8956.cpp:10:8: note:   no known conversion for argument 1 from 'int' to 'sum&&'