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1059.cpp
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51 lines (46 loc) · 755 Bytes
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#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int L; cin >> L;
vector<int> v(L);
for (int i = 0; i < L; i++) {
cin >> v[i];
}
sort(v.begin(), v.end());
bool is_same = false;
int n; cin >> n;
for (int i = 0; i < L; i++) {
if(v[i] == n){
is_same = true;
break;
}
}
if (is_same) {
cout << 0;
}
else {
int start = 0, end = 0;
for (int i = 0; i < L; i++) {
if (v[i] > n) {
start = v[i - 1];
end = v[i];
break;
}
}
int ans = 0;
for (int i = start + 1; i < end; i++) {
for (int j = i + 1; j < end; j++) {
if (i <= n && n <= j) {
ans++;
}
}
}
cout << ans;
}
return 0;
}