Submission #7105

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
7105	2014-07-25 11:19:27	baneling100	지우개 (GA4_eraser)	C++98	100 / 100	16 ms	3432 KiB

eraser

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#include <stdio.h>
#define MOD 1000000007
long long N, M, A[100001], B[100001], C[100001], Ans;
void input(void)
{
    long long i, temp;
    scanf("%lld",&N);
    for(i=1 ; i<=N ; i++)
    {
        scanf("%lld",&temp);
        A[temp]++;
        if(M<temp)
            M=temp;
    }
}
void process(void)
{
    long long i, sum=0;
    for(i=M ; i>=2 ; i--)
    {
        sum+=i*A[i];
        sum%=MOD;
        B[i-1]=(i-1)*sum*A[i-1];
        B[i-1]%=MOD;
    }
 
 
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• Subtask 2: 7 / 7
• Subtask 3: 16 / 16
• Subtask 4: 17 / 17
• Subtask 5: 26 / 26
• Subtask 6: 28 / 28