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OI-codes/Luogu/P1116/P1116.cpp

26 lines
483 B
C++

// R38788162
#include <bits/stdc++.h>
using namespace std;
int main() {
int n, a[10005], ans = 0;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
for (int i = 0; i < n; i++) {
for (int j = 1; j < n; j++) {
if (a[j] < a[j - 1]) {
a[j] ^= a[j - 1];
a[j - 1] ^= a[j];
a[j] ^= a[j - 1];
ans++;
}
}
}
cout << ans << endl;
return 0;
}