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View Compilation Error

0_0_34092142_8665.cpp: In member function 'void Link_Cut_Tree::pushup(int)':
0_0_34092142_8665.cpp:6:12: error: 'class std::vector<int>' has no member named 'empalce_back'
 #define pb empalce_back
            ^
0_0_34092142_8665.cpp:37:11: note: in expansion of macro 'pb'
         v.pb(val[x]),v.pb(xr[c[x][0]][0]),v.pb(xr[c[x][0]][1]),v.pb(xr[c[x][1]][0]),v.pb(xr[c[x][1]][1]);
           ^
0_0_34092142_8665.cpp:6:12: error: 'class std::vector<int>' has no member named 'empalce_back'
 #define pb empalce_back
            ^
0_0_34092142_8665.cpp:37:24: note: in expansion of macro 'pb'
         v.pb(val[x]),v.pb(xr[c[x][0]][0]),v.pb(xr[c[x][0]][1]),v.pb(xr[c[x][1]][0]),v.pb(xr[c[x][1]][1]);
                        ^
0_0_34092142_8665.cpp:6:12: error: 'class std::vector<int>' has no member named 'empalce_back'
 #define pb empalce_back
            ^
0_0_34092142_8665.cpp:37:45: note: in expansion of macro 'pb'
         v.pb(val[x]),v.pb(xr[c[x][0]][0]),v.pb(xr[c[x][0]][1]),v.pb(xr[c[x][1]][0]),v.pb(xr[c[x][1]][1]);
                                             ^
0_0_34092142_8665.cpp:6:12: error: 'class std::vector<int>' has no member named 'empalce_back'
 #define pb empalce_back
            ^
0_0_34092142_8665.cpp:37:66: note: in expansion of macro 'pb'
         v.pb(val[x]),v.pb(xr[c[x][0]][0]),v.pb(xr[c[x][0]][1]),v.pb(xr[c[x][1]][0]),v.pb(xr[c[x][1]][1]);
                                                                  ^
0_0_34092142_8665.cpp:6:12: error: 'class std::vector<int>' has no member named 'empalce_back'
 #define pb empalce_back
            ^
0_0_34092142_8665.cpp:37:87: note: in expansion of macro 'pb'
         v.pb(val[x]),v.pb(xr[c[x][0]][0]),v.pb(xr[c[x][0]][1]),v.pb(xr[c[x][1]][0]),v.pb(xr[c[x][1]][1]);
                                                                                       ^


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