摘要:
1 #include 2 #define ll long long 3 4 const ll MOD = 1e9; 5 6 int main() 7 { 8 ll N, M; 9 while(scanf("%lld%lld", &N, &M) != EOF)10 {1... 阅读全文
摘要:
1 //组合数学 2 //计算sum{i从右往左数的第一个非0数字,p 4 typedef long long ll; 5 6 ll sum(ll n) 7 { 8 ll ans = 0, x; 9 while(n)10 {11 x = n % 10;12... 阅读全文