OJ-Problems-Source/HDOJ/5256_autoAC.cpp

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#include <cstdio>
#include <algorithm>
using namespace std;
const int N = 100005;
int n, s[N], f[N];
int main() {
int t, cas = 1;
scanf("%d", &t);
while (t--) {
scanf("%d", &n);
int a;
for (int i = 0; i < n; i++) {
scanf("%d", &a);
s[i] = a - i;
}
int k = 0;
f[k++] = s[0];
for (int i = 1; i < n; i++) {
if (s[i] >= f[k - 1])
f[k++] = s[i];
else {
int pos = upper_bound(f, f + k, s[i]) - f;
f[pos] = s[i];
}
}
printf("Case #%d:\n%d\n", cas++, n - k);
}
return 0;
}