#include <bits/stdc++.h>
using namespace std;
#define int int64_t
int v[200010];
int n;
set<int> st;
int exp(int x, int y, int p)
{
int res = 1;
x = x % p;
while (y > 0)
{
if (y & 1)
res = (res*x) % p;
y = y>>1;
x = (x*x) % p;
}
return res;
}
int main()
{
cin >> n;
for(int i = 0; i < n; i++)
{
cin >> v[i];
st.insert(v[i]);
}
vector<int> p;
for(int i = 0; i < n - 1; i++)
{
if(v[i] == v[i + 1])
{
int cont = 1;
while(v[i] == v[i + 1])
{
cont++;
i++;
}
p.push_back(cont);
}
}
long long ans = 1;
for(auto u : p)
{
ans *= exp(2, u, 1000000007);
ans %= (1000000007);
}
cout << st.size() << " " << ans << "\n";
}
Compilation message
zoltan.cpp:25:10: error: '::main' must return 'int'
int main()
^
