Submission #145029

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
145029	2019-08-18 12:58:30	Mihnea	Mate (COCI18_mate)	C++14	80 / 100	2072 ms	60816 KiB

mate

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include<iostream>
#include<cstring>
#define MOD 1000000007
using namespace std;
long long I;
long long a[2005][2005],b[2005][30],poz[30][2005],sol[2005][30][30],D[2005][30][30];
char s[2005],X,Y;
int main(){
    cin>>(s+1);
    int n=strlen((s+1));
    a[0][0]=1;
    for(int i=1;i<=n;i++){
        a[i][0]=a[i][i]=1;
        for(int j=1;j<i;j++){
            a[i][j]=a[i-1][j-1]+a[i-1][j];
            if(a[i][j]>=MOD)
                a[i][j]-=MOD;
        }
    }
    for(int i=1;i<=n;i++)
        poz[s[i]-'a'][ ++poz[s[i]-'a'][0] ]=i;
    for(int i=n;i>=1;i--)
        for(int j=0;j<26;j++)
            if(s[i]=='a'+j)
                b[i][j]=1+b[i+1][j];
            else
                b[i][j]=b[i+1][j];
    for(int i=n;i>=1;i--)
        for(int j=0;j<26;j++)
            for(int k=0;k<26;k++)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 80 / 100