[0,x)的随机数

 #include <cstdio>
 #include <cstdlib>
 #include <cmath>
 #include <cstring>
 #include <time.h>
 #include <string>
 #include <set>
 #include <map>
 #include <list>
 #include <stack>
 #include <queue>
 #include <vector>
 #include <bitset>
 #include <ext/rope>
 #include <algorithm>
 #include <iostream>
 using namespace std;
 #define ll long long
 #define minv 1e-6
 #define inf 1e9
 #define pi 3.1415926536
 #define nl 2.7182818284
 const ll mod=1e9+;//
 const int maxn=1e5+;

 int main()
 {
     int x=,y,n,t=;
     srand(time(NULL));
     y=x/+;///+1
     //[0,y)*32768+[0,32768)
     while (t--)
     {
         while (( n = rand()%y* + rand() )>=x);
         printf("%d\n",n);
     }
     return ;
 }