QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#718814 | #9573. Social Media | guangxuautumn | WA | 45ms | 3736kb | C++14 | 1.6kb | 2024-11-06 21:31:34 | 2024-11-06 21:31:40 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
void solve()
{
int n, m, k;
cin >> n >> m >> k;
vector<int> fri(k + 10), cnta(k + 10);
for(int i = 0; i < n; i ++) {
int x;
cin >> x;
fri[x] = 1;
}
vector<pair<int,int>> mesa, mesb;
int cnt = 0;
for(int i = 0; i < m; i ++) {
int x, y;
cin >> x >> y;
if(fri[x] && fri[y]) {
// cout << x << ' ' << y << endl;
cnt ++;
} else if(fri[x] || fri[y]) {
mesa.push_back({x, y});
} else if(x == y) {
mesa.push_back({x, y});
} else mesb.push_back({x, y});
}
// cout << mesb.size() << ' ';
// cout << cnt << endl;
if(n == k || n == k - 1) {
cout << m << '\n';
return;
}
for(int i = 0; i < mesa.size(); i ++) {
int x = mesa[i].first, y = mesa[i].second;
if(x == y) cnta[x] ++;
else {
if(!fri[x]) cnta[x] ++;
if(!fri[y]) cnta[y] ++;
}
}
// for(int i = 1; i <= k; i ++) cout << cnta[i] << ' ';cout << endl;
vector<map<int, int>> sec(k + 10);
for(int i = 0; i < mesb.size(); i ++) {
int x = mesb[i].first, y = mesb[i].second;
sec[x][y] ++;
sec[y][x] ++;
// cout << x << ' ' << y << endl;
}
if(mesb.empty()) {
sort(cnta.begin(), cnta.end());
cout << cnt + cnta.back() + cnta[cnta.size() - 2] << '\n';
return;
}
int ans = 0;
for(int i = 1; i <= k; i ++) {
if(fri[i]) continue;
for(auto s:sec[i]) {
if(cnta[i] + cnta[s.first] + s.second > ans) {
ans = cnta[i] + cnta[s.first] + s.second;
}
}
}
cout << ans + cnt << '\n';
}
int main()
{
int t;
cin >> t;
while(t--)
solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3736kb
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: 45ms
memory: 3592kb
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 19 15 2 18 4 17 3 1 2 5 17 3 2 6 15 6 3 6 3 4 7 3 7 4 1 16 15 2 3 6 12 12 7 6 8 7 6 8 11 16 1 4 9 8 14 2 6 19 19 16 8 20 14 8 12 7 9 6 8 1 17 9 5 5 3 6 6 20 8 13 11 10 5 3 6 3 1 8 5 7 11 7 14 9 9 9 11 7 8 5 2 8 14 10 5 3 5 5 10 1 6 8 16 5 3 19 1 4 8 8 10 3 2 1 14 ...
result:
wrong answer 22nd numbers differ - expected: '5', found: '3'