22 lines
371 B
C++
22 lines
371 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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int main () {
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int n;
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cin >> n;
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vector<int>v(n);
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for (int i = 0; i < n; i++) {
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cin >> v[i];
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}
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sort(v.begin(), v.end());
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int out =1;
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for (int i = 0; i < n; i++) {
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if (i!=0){
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if (v[i-1] != v[i]) {
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out++;
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}
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}
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}
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cout<<out;
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}
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