0_0_32308684_8544.cpp: In function 'int main()': 0_0_32308684_8544.cpp:47:2: error: expected initializer before 'while' while(scanf("%d%d%d%d",&n,&m,&X,&P)!=EOF){ ^ 0_0_32308684_8544.cpp:79:1: error: expected '}' at end of input } ^