View Compilation Error

0_0_20826748_5093.cpp: In function 'int main()':
0_0_20826748_5093.cpp:62:9: error: 'RG' was not declared in this scope
     for(RG int i=1;i<=n;++i){
         ^
0_0_20826748_5093.cpp:62:20: error: 'i' was not declared in this scope
     for(RG int i=1;i<=n;++i){
                    ^
0_0_20826748_5093.cpp:64:14: error: expected ';' before 'int'
       for(RG int u=1;u<=m;++u)
              ^
0_0_20826748_5093.cpp:64:22: error: 'u' was not declared in this scope
       for(RG int u=1;u<=m;++u)
                      ^