Submission #19675

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19675	2016-02-25 04:26:37	rhdmstjr	괄호 (kriii4_R)	C++98	0 / 100	4 ms	8896 KiB

R

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#include <cstdio>
#define MAX_NUM 1000004
#define XXX     1000000007
long long dp[MAX_NUM];
int main(){
    int N, K; scanf("%d%d", &N, &K);
    // init
    dp[0] = 0;
    dp[1] = K;
    for(int i = 2; i <= N; i++){
        long long &now = dp[i];
        long long &pre = dp[i - 1];
        now = 0;
        // odd
        if(i & 1){
            now += K * dp[i / 2];
        }else{
            now += dp[i / 2];
        }
        now %= XXX;
        
        now += pre * K; now %= XXX;
    }
    
    printf("%lld\n", dp[N]);
}
 
 
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• Subtask 1: 0 / 8
• Subtask 2: 0 / 92