Main.cc:10:25: error: narrowing conversion of ‘1.0000000000000001e-9’ from ‘double’ to ‘int’ inside { } [-Wnarrowing] int Stack[100001]= {1e-9}; ^ Main.cc: In function ‘int main()’: Main.cc:20:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &p); ~~~~~^~~~~~~~~~~~~~~~~~~~~~ Main.cc:23:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &s[i].x, &s[i].y); ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~