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P7911 [CSP-J 2021] 网络连接（民间数据）

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R61010493
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Baoshuo Ren 2021-10-26 20:15:07 +08:00 committed by Baoshuo Ren
parent 426cf482cd
commit 2f7ec8ec7d
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
1 changed files with 67 additions and 0 deletions
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67
Luogu/problem/P7911/P7911.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int n;
string op, ad;
map<string, long long> server;
bool check(string s) {
long long cnt1 = 0, cnt2 = 0, now = 0, flag = 0;
for (int i = 0; i < s.size(); i++) {
if (s[i] == '.') {
cnt1++;
if (cnt2) return 0;
if (i == 0 || s[i - 1] == '.') return false;
if (cnt1 > 3) return false;
if (now < 0 || now > 255) return false;
flag = 0;
now = 0;
continue;
}
if (s[i] == ':') {
cnt2++;
if (i == s.size() - 1) return false;
if (cnt2 > 1) return false;
if (i == 0 || s[i - 1] == ':') return false;
if (now < 0 || now > 255) return false;
flag = 0;
now = 0;
continue;
}
if (s[i] < '0' || s[i] > '9') return false;
if (s[i] == '0' && flag == 0) flag = 1;
if (s[i] != '0' && flag == 1) return 0;
if (s[i] != '0') flag = 2;
now = now * 10 + s[i] - '0';
}
if (cnt1 != 3 || cnt2 != 1) return false;
if (now < 0 || now > 65535) return false;
return true;
}
int main() {
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> op >> ad;
if (check(ad)) {
if (op == "Server") {
if (server.count(ad)) {
cout << "FAIL" << endl;
} else {
server[ad] = i;
cout << "OK" << endl;
}
} else {
if (server.count(ad)) {
cout << server[ad] << endl;
} else {
cout << "FAIL" << endl;
}
}
} else {
cout << "ERR" << endl;
}
}
return 0;
}