QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#735357 | #9573. Social Media | xbzxzn# | WA | 18ms | 3876kb | C++17 | 1.3kb | 2024-11-11 19:27:23 | 2024-11-11 19:27:23 |
Judging History
answer
#include <bits/stdc++.h>
using i64 = long long;
void solve() {
int n, m, k;
std::cin >> n >> m >> k;
std::vector<int> f(n), s1(k), cnt(k);
for (int i = 0; i < n; i++) {
std::cin >> f[i];
f[i]--;
s1[f[i]] = 1;
}
i64 ans = 0;
std::map<std::pair<int, int>, int> e;
for (int i = 0; i < m; i++) {
int x, y;
std::cin >> x >> y;
x--, y--;
if (x > y) std::swap(x, y);
if (x == y) {
cnt[x]++;
continue;
}
if (s1[x] && s1[y]) {
ans++;
} else if (s1[x]) {
cnt[y]++;
} else if (s1[y]) {
cnt[x]++;
} else {
assert(!s1[x] && !s1[y]);
e[{x, y}]++;
}
}
i64 tmp = 0;
for (auto [fi, sc] : e) {
tmp = std::max(tmp, 1LL * cnt[fi.first] + cnt[fi.second] + ans + sc);
}
std::sort(cnt.begin(), cnt.end(), std::greater());
if (cnt.size() > 1) {
tmp = std::max(tmp, ans + cnt[0] + cnt[1]);
}
tmp = std::max(tmp, ans);
std::cout << tmp << "\n";
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int t;
std::cin >> t;
while (t--) {
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3624kb
input:
5 4 12 7 5 7 3 6 3 6 2 2 1 4 2 4 1 3 7 6 4 1 5 4 1 1 1 1 2 1 3 7 2 7 6 2 4 1 2 3 2 2 5 5 4 2 6 4 6 2 6 1 1 2 1 1 2 2 1 2 1 2 1 2 2 1 100 24 11 11 24
output:
9 5 1 1 1
result:
ok 5 number(s): "9 5 1 1 1"
Test #2:
score: -100
Wrong Answer
time: 18ms
memory: 3876kb
input:
10000 19 12 20 8 12 1 5 11 7 17 13 19 6 3 9 10 15 14 20 4 18 16 4 11 7 1 8 4 16 19 1 13 15 2 16 2 8 7 3 15 11 13 5 20 18 14 17 14 20 2 9 1 12 8 11 10 17 18 16 3 15 5 14 20 13 7 15 10 3 2 5 16 7 8 6 1 6 4 18 16 1 8 4 1 20 6 6 9 4 15 7 5 14 9 1 3 18 9 15 18 17 15 11 14 7 19 7 3 1 2 5 6 4 7 5 1 4 5 3 1...
output:
12 14 1 19 6 5 1 11 19 4 3 10 4 1 4 18 15 2 18 4 17 4 1 2 5 16 3 2 6 15 6 3 6 4 3 7 3 7 4 1 15 15 2 3 6 11 11 7 5 8 8 6 8 11 16 1 4 9 8 14 2 6 19 16 16 8 20 14 6 12 6 9 6 8 2 16 9 5 5 3 6 6 20 8 13 11 8 5 2 6 3 1 8 4 8 11 7 13 9 9 8 11 7 9 5 2 8 14 10 5 3 5 5 8 1 6 9 16 5 3 19 1 3 8 7 10 4 2 1 12 1 ...
result:
wrong answer 16th numbers differ - expected: '19', found: '18'