제출 #4202

#제출 시각아이디문제언어결과실행 시간메모리
4202pl0892029Inherited disease (kriii1_I)C++98
0 / 1
0 ms1088 KiB
#include <stdio.h> int main() { int c, tmp=1; long long num=0, p[100]; int mod = 1000000007; scanf("%d", &c); for(int i=0;i<c;i++) { scanf("%d", &p[i]); } for(int i=0;i<c;i++) { if(i>0) { num=(num+p[i]+((i+1)*(mod+p[i-1]-1))+(tmp+mod-p[i-1]))%mod; p[i]=(p[i]+(p[i-1]-1)*(i+1))%mod; tmp=(tmp*(i+1))%mod; } else num=(num+p[i])%mod; printf("%lld\n", num%mod); } }
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