Language: Default Alignment
Description In the army, a platoon is composed by n soldiers. During the morning inspection, the soldiers are aligned in a straight line in front of the captain. The captain is not satisfied with the way his soldiers are aligned; it is true that the soldiers are aligned Write a program that, knowing the height of each soldier, determines the minimum number of soldiers which have to get out of line. Input On the first line of the input is written the number of the soldiers n. On the second line is written a series of n floating numbers with at most 5 digits precision and separated by a space character. The k-th number from this line represents the height of There are some restrictions: ? 2 <= n <= 1000 ? the height are floating numbers from the interval [0.5, 2.5] Output The only line of output will contain the number of the soldiers who have to get out of the line. Sample Input 8 1.86 1.86 1.30621 2 1.4 1 1.97 2.2 Sample Output 4 Source |
#include <iostream> #include <cstdio> #include <cstring> using namespace std; #define maxn 1005 int d[2][maxn]; double a[maxn]; int n; int main() { while(~scanf("%d", &n)) { for(int i=0; i<n; i++) scanf("%lf", &a[i]); for(int i=0; i<n; i++) { d[0][i] = d[1][i] = 1; } for(int i=1; i<n; i++) for(int j=0; j<i; j++) if(a[j] < a[i]) d[0][i] = max(d[0][i], d[0][j]+1); for(int i=n-2; i>=0; i--) for(int j=n-1; j>i; j--) if(a[j] < a[i]) d[1][i] = max(d[1][i], d[1][j] + 1); int ans = -1; for(int i=0; i<n; i++) for(int j=i+1; j<n; j++) ans = max(ans, d[0][i]+d[1][j]); printf("%d\n", n - ans); } return 0; } /* 8 1.86 1.86 1.30621 2 1.4 1 1.97 2.2 */
版权声明:本文为博主原创文章,未经博主允许不得转载。