额，这样写太复杂了吧
by Po7ed @ 2023-10-08 21:47:39
建议用亿些黑科技
by Po7ed @ 2023-10-08 21:48:13
我的 `check()`：
```cpp
bool check(string ad)
{
int a=0,b=0,c=0,d=0,e=0;
char t1=0,t2=0,t3=0,t4=0;
sscanf(ad.c_str(),"%d%c%d%c%d%c%d%c%d",&a,&t1,&b,&t2,&c,&t3,&d,&t4,&e);
if(a<0||a>255||b<0||b>255||c<0||c>255||d<0||d>255||e<0||e>65535)return 0;
if(t1!='.'||t2!='.'||t3!='.'||t4!=':')return 0;
stringstream ss;
ss<<a<<'.'<<b<<'.'<<c<<'.'<<d<<':'<<e;
if(ss.str()!=ad)return 0;
return 1;
}
```
by Po7ed @ 2023-10-08 21:49:16
@[Po7ed](/user/745171) 什么黑科技
by IDNo1 @ 2023-10-08 21:49:43
@[Po7ed](/user/745171) @[Po7ed](/user/745171) @[Po7ed](/user/745171) WATAHT???
by IDNo1 @ 2023-10-08 21:50:16
大模拟基本上没什么人调（
放一下我的，可以参考一下哪里没有考虑：
```cpp
#include <bits/stdc++.h>
#define int long long
using namespace std;
string s[100001], id[100001];
int n;
int C(string o, string d, int p) {
if (o == "Server") {
for (int k = 1; k < p; k++) if (o == s[k] && d == id[k]) return 0;
return 1;
} else {
for (int k = 1; k < p; k++) if (o != s[k] && d == id[k]) return k;
return 0;
}
}
bool E(string id) {
int p = 0, o = -1, x = 0, sum = 0, l = id.size();
bool flag = 1;
for (int i = 0; i < l; i++) if (id[i] == ':') { o = i; break; }
if (o == -1) return 0;
for (int i = 0; i < o; i++) {
if (id[i] >= '0' && id[i] <= '9') {
int p = i, x = 0;
bool flag = 1;
for (int j = i; j < l; j++) {
if (id[j] < '0' || id[j] > '9') {i = j; break;}
if (flag && id[j] == '0' && id[j + 1] >= '0' && id[j + 1] <= '9') return 0;
if (id[j] != '0') flag = 0;
x = x * 10 + id[j] - '0';
}
if (p == i) return 0;
if (x > 255 || x < 0) return 0;
sum++;
}
p += (id[i] == '.');
if (id[i] == '.' && id[i + 1] == '.') return 0;
}
if (sum != 4) return 0;
if (id[o - 1] == '.') return 0;
if (o + 1 == l) return 0;
for (int i = o + 1; i < l; i++) {
if (flag && id[i] == '0' && id[i + 1] >= '0' && id[i + 1] <= '9') return 0;
if (id[i] != '0') flag = 0;
if (id[i] < '0' || id[i] > '9') return 0;
x = x * 10 + id[i] - '0';
if (x > 65535) return 0;
}
return (p == 3 && x <= 65535 && x >= 0);
}
signed main() {
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> s[i] >> id[i];
if (s[i] == "Server") {
if (!E(id[i])) { cout << "ERR\n"; continue; }
if (C(s[i], id[i], i)) cout << "OK" << endl;
else cout << "FAIL" << endl;
} else {
if (!E(id[i])) { cout << "ERR\n"; continue; }
if (C(s[i], id[i], i) != 0) cout << C(s[i], id[i], i) << endl;
else cout << "FAIL" << endl;
}
}
return 0;
}
```
by InversionShadow @ 2023-10-08 21:54:06
@[Po7ed](/user/745171) 为什么我这分代码跑不对
```cpp
#include<bits/stdc++.h>
#define re register int
using namespace std;
int n=114510,c;
int main()
{
string ccf="114514&&&111",b;
sscanf(ccf.c_str(),"%d%s%d",&n,&b,&c);
cout<<n<<" "<<b<<" "<<c;
return 0;
}
```
by IDNo1 @ 2023-10-08 21:58:48
@[IDNo1](/user/777131)
* IP判断合法时，从IP中提取5个数字，按规则拼接成合法的IP，并于输入的IP比较。
* 使用unordered_map找主机
这是我做题时用的技巧，也顺便总结一下 $Po7ed$
by linnaeuss @ 2023-10-08 21:59:27
@[IDNo1](/user/777131) sscanf 读不了 string
by Po7ed @ 2023-10-09 15:01:09