Submission #923441

#	Time	Username	Problem	Language	Result	Execution time	Memory
923441		NValchanov	Palindromes (info1cup18_palindromes)	C++17	100 / 100	118 ms	41412 KiB

palindromes

#include<bits/stdc++.h>

#define endl '\n'

using namespace std;

typedef long long ll;

const ll MAXN=1e6+10;
const ll MAXA=1e9+10;

ll n;
string a[MAXN];

ll string_to_int(string s)
{
    ll res=0;
    ll sz=s.size();
    for(ll i=sz-1;i>=0;i--)
    {
        res*=10;
        res+=(s[i]-'0');
    }
    return res;
}

bool isPalindrome(string s)
{
    string revs=s;
    reverse(revs.begin(), revs.end());
    return s == revs;
}

void read()
{
    cin>>n;
    for(ll i=1;i<=n;i++)
    {
        cin>>a[i];
    }
}

void solve()
{
    ll ans=0;
    for(ll i=1;i<=n;i++)
    {
        string s=a[i];
        if(isPalindrome(s))
        {
            ll cur=string_to_int(s);
            ans+=cur;
        }
    }
    cout<<ans<<endl;
}

int main()
{
    #ifdef ONLINE_JUDGE
    freopen(".in", "r", stdin);
    freopen(".out", "w", stdout);
#endif
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

    read();
    solve();

	return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 35 / 35