View Compilation Error

0_0_21531164_4695.cpp: In function 'int main()':
0_0_21531164_4695.cpp:131:19: error: redeclaration of 'long long int sum1'
                ll sum1=dsum(1,y,y)-qslove(y);
                   ^
0_0_21531164_4695.cpp:127:18: note: 'long long int sum1' previously declared here
               ll sum1=dsum(1,y,y)-dfs(0,y,1);
                  ^
0_0_21531164_4695.cpp:132:19: error: redeclaration of 'long long int sum2'
                ll sum2=dsum(1,x-1,x-1)-qslove(x-1);
                   ^
0_0_21531164_4695.cpp:128:18: note: 'long long int sum2' previously declared here
               ll sum2=dsum(1,x-1,x-1)-dfs(0,x-1,1);
                  ^