冰

求一个数的模p（一般为质数）的逆元，

using namespace std; typedef long long LL; const int INF = 0x3f3f3f3f; const int maxn = 100010; const int MOD = 1000000007; int n, m; int a[1000100]; LL calc(int idx) { LL ans = 0; int x = -1

gets strtok sscanf #include #include #include using namespace std; char s[1000]; int main() { while (gets(s)) { char *p = strtok(s, " "); while (p) {