main
黄海 1 year ago
parent 402da51914
commit 1960986cc5

@ -1,48 +1,9 @@
#include <bits/stdc++.h>
using namespace std;
const int INF = 0x3f3f3f3f;
const int N = 110;
double a[N];
int n;
int f1[N], f2[N];
#define endl '\n'
int main() {
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i];
for (int i = 1; i <= n; i++) {
f1[i] = 1;
for (int j = 1; j < i; j++)
if (a[i] > a[j]) f1[i] = max(f1[i], f1[j] + 1);
}
for (int i = n; i >= 1; i--) {
f2[i] = 1;
for (int j = 1; j < i; j++)
if (a[i] > a[j]) f2[i] = max(f1[i], f1[j] + 1);
}
bool flag = true;
for (int i = 1; i <= n; i++)
if (f1[i] != 1) {
flag = false;
break;
}
if (flag) {
cout << -1 << endl;
exit(0);
}
flag = true;
for (int i = 1; i <= n; i++)
if (f2[i] != 1) {
flag = false;
break;
}
if (flag) {
cout << -1 << endl;
exit(0);
}
int mx = -1;
for (int i = 1; i <= n; i++){
int t = f1[i] + f2[i];
mx = max(mx, t);
}
cout << n - mx + 1;
// 加快读入
ios::sync_with_stdio(false), cin.tie(0);
cout << "dd" << endl;
return 0;
}

@ -1,16 +1,9 @@
#include <bits/stdc++.h>
using namespace std;
int n;
const int N = 110;
typedef long long LL;
LL a[N];
LL res;
#define endl '\n'
int main() {
while (cin >> a[++n]);
n--;
for (int i = 1; i <= n; i++)res += a[i] * pow(2, n - 1);
printf("%d", res);
// 加快读入
ios::sync_with_stdio(false), cin.tie(0);
cout << "aaa" << endl;
return 0;
}
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