Submission #1165994

---

Source Code Expand

#include<bits/stdc++.h>
#define range(i,a,b) for(int i = (a); i < (b); i++)
#define rep(i,b) for(int i = 0; i < (b); i++)
#define all(a) (a).begin(), (a).end()
#define show(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
const int INF = 2000000000;
using namespace std;

int main(){
    int n;
    string a,b;
    cin >> n >> a >> b;

    map<char,char> m;
    rep(j,20){
        rep(i,n){
            if(isupper(a[i]) && isdigit(b[i])){
                m[a[i]] = b[i];
            }else if(isupper(b[i]) && isdigit(a[i])){
                m[b[i]] = a[i];
            }else if(isupper(a[i]) && isupper(b[i])){
            }
            if(isdigit(m[a[i]])){
                m[b[i]] = m[a[i]];
            }else if(isdigit(m[b[i]])){
            }
            m[a[i]] = m[b[i]];
        }
    }

    long long ans = 1;
    bool isUsed[100] = {0};
    rep(i,n){
        if(isdigit(m[a[i]]) || isdigit(a[i]) || isdigit(b[i])) continue;
        if(isUsed[a[i]] || isUsed[b[i]]) continue;
        if(i == 0) ans *= 9LL;
        else ans *= 10LL;
        isUsed[a[i]] = true;
    }
    cout << ans << endl;
}

Submission Info

Judge Result