0_0_14909842_24344.cpp: In function 'int main()': 0_0_14909842_24344.cpp:66:18: error: 'u' was not declared in this scope scanf("%d%d",&u,&v); ^ 0_0_14909842_24344.cpp:66:21: error: 'v' was not declared in this scope scanf("%d%d",&u,&v); ^