View Compilation Error

0_0_32460241_23988.cpp: In function 'int main()':
0_0_32460241_23988.cpp:101:24: error: 'c' was not declared in this scope
       modify(l[i],l[i]+c-1,1,1,n,1);
                        ^
0_0_32460241_23988.cpp:104:19: error: 'c' was not declared in this scope
       modify(r[i]-c+1,r[i],1,1,n,1);
                   ^