这样写在考场会不会锅啊

#include<bits/stdc++.h>
#define int long double
#define per(x,y,z) for(signed x=y;x<=z;x++)
using namespace std;
long long ton[10],n,cnt,res[120];
int c[120][120]={1},mul[120]={1},p;string a;
signed main(){
    cin>>a,n=a.length();per(i,1,n){
     a[i-1]^=48;if(a[i-1]==0)cnt++;
     ton[a[i-1]]++,res[a[i-1]]++;
     mul[i]=mul[i-1]*i,c[i][0]=1;
     per(k,1,i)c[i][k]+=c[i-1][k-1]+c[i-1][k];
    }
    
    int y=1;per(i,1,9)if(ton[i])y*=mul[ton[i]];
    per(i,0,cnt-1)p+=c[n-(cnt-i)-1][i]*(mul[n-cnt]/y);
    per(i,0,n-2){
        per(k,0,a[i]-1){
            if(!res[k]||(i==0&&k==0))continue;y=mul[n-i-1];
            per(j,0,9)if(j!=k&&res[j])y/=mul[res[j]];
            if(res[k]-1)y/=mul[res[k]-1];p+=y;
        }
        res[a[i]]--;
    } 
    cout<<((long long)p);//阶乘爆longlong 巧妙的long double 
}//带重复元素全排列计算方法为元素总个数的阶乘除以各个元素个数阶乘之积。