View Compilation Error

0_0_17298715_25968.cpp: In function 'bool check(int)':
0_0_17298715_25968.cpp:22:18: error: 'y' was not declared in this scope
     rep(i,1,m)if(y[i]>S){
                  ^
0_0_17298715_25968.cpp:23:17: error: redeclaration of 'int y'
 int p=l[i]+r[i],y=r[i]-l[i];
                 ^
0_0_17298715_25968.cpp:22:18: note: '<typeprefixerror>y' previously declared here
     rep(i,1,m)if(y[i]>S){
                  ^