Submission #64275773

Source Code Expand

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#include<bits/stdc++.h>
#define int long long
#define endl "\n"
#define pb push_back
#define ceil(n, m) (((n) + (m) - 1) / (m))
#define all(a) (a).begin(), (a).end()
#define add_mod(a, b) (((a % modn) + (b % modn)) % modn)
#define sub_mod(a, b) (((a % modn) - (b % modn) + modn) % modn)
#define mul_mod(a, b) (((a % modn) * (b % modn)) % modn)
#define modn 1000000007
using namespace std;
int power(int a, int b) {
    int ans = 1;
    while (b) {
        if (b & 1) {
            ans = (ans * 1ll *  a);
        }
        b >>= 1;
        a = (a * 1ll * a);
 
 
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#include<bits/stdc++.h>
#define int long long
#define endl "\n"
#define pb push_back
#define ceil(n, m) (((n) + (m) - 1) / (m))
#define all(a) (a).begin(), (a).end()
#define add_mod(a, b) (((a % modn) + (b % modn)) % modn)
#define sub_mod(a, b) (((a % modn) - (b % modn) + modn) % modn)
#define mul_mod(a, b) (((a % modn) * (b % modn)) % modn)
#define modn 1000000007
using namespace std;


int power(int a, int b) {
    int ans = 1;
    while (b) {
        if (b & 1) {
            ans = (ans * 1ll *  a);
        }
        b >>= 1;
        a = (a * 1ll * a);
    }
    return ans;
}

int binpow(int a, int b, int mod) {
    if (b == 0)
        return 1;
    if (b % 2) {
        return a * binpow(a, b - 1, mod) % mod;
    } else {
        int temp = binpow(a, b / 2, mod);
        return temp * temp % mod;
    }
}

int fact(int n) {
    int res = 1;
    for (int i = 1; i <= n; i++) {
        res = res * 1ll * i % modn;
    }
    return res;
}

int nCr(int n, int k) {
    return fact(n) * binpow(fact(k), modn - 2, modn) % modn * binpow(fact(n - k), modn - 2, modn) % modn;
}

void solve()
{
    int n;
    cin >> n;
    string s, t;
    cin >> s >> t;
    int ans = 0;
    for (int i = 0; i < n; ++i)
    {
        if (s[i] != t[i])ans++;
    }
    cout << ans << endl;
}

int32_t main() {

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

#ifdef ONLINEJUDGE
    clock_t tStart = clock();
    freopen("inputf.in", "r", stdin); //can need to change file . this one for taking input
    freopen("outputf.out", "w", stdout); // this one for output
#endif

    //Your Code

#ifdef ONLINEJUDGE
    fprintf(stderr, "\n>> Runtime: %.10fs\n", (double) (clock() - tStart) / CLOCKS_PER_SEC); // this line gives your code runtime
#endif


    int t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }

    return 0;
}

Submission Info

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