这个题???我WA了两发???
#include<iostream> #include<cstdio> #include<cmath> #include<cstdlib> #include<cstring> #include<algorithm> using namespace std; #define ll long long char getc(){char c=getchar();while ((c<'A'||c>'Z')&&(c<'a'||c>'z')&&(c<'0'||c>'9')) c=getchar();return c;} ll gcd(ll n,ll m){return m==0?n:gcd(m,n%m);} int read() { int x=0,f=1;char c=getchar(); while (c<'0'||c>'9') {if (c=='-') f=-1;c=getchar();} while (c>='0'&&c<='9') x=(x<<1)+(x<<3)+(c^48),c=getchar(); return x*f; } ll a,b,c; int main() { #ifndef ONLINE_JUDGE freopen("bzoj5105.in","r",stdin); freopen("bzoj5105.out","w",stdout); const char LL[]="%I64d "; #else const char LL[]="%lld "; #endif a=read(),b=read(),c=read(); b=1ll*a*b/gcd(a,b); c=1ll*b*c/gcd(b,c); cout<<c; return 0; }