# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
970951 |
2024-04-27T15:53:55 Z |
aZvezda |
Hiring (IOI09_hiring) |
C++14 |
|
271 ms |
26636 KB |
#include <bits/stdc++.h>
using namespace std;
#ifndef LOCAL
#define cerr if (false) cerr
#endif
#define endl "\n"
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
typedef long long ll;
const ll mod = 1e9 + 7;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
const ll MAX_N = 5e5 + 10;
std::pair<ll, ll> arr[MAX_N];
ll n, w;
signed main() {
#ifndef LOCAL
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#endif
cin >> n >> w;
for (ll i = 0; i < n; i ++) {
cin >> arr[i].first >> arr[i].second;
}
if (n <= 20) {
#define HAS(mask, x) ((bool)(mask & (1 << i)))
ll mx = 0;
long double ans = 0;
ll who = 0;
for (int mask = 0; mask < (1 << n); mask ++) {
ll sum = 0;
long double mn = 0;
for (int i = 0; i < n; i ++) if (HAS(mask, i)) {
sum += arr[i].second;
chkmax(mn, (long double)arr[i].first / arr[i].second);
}
ll total = __builtin_popcount(mask);
if (total > mx && sum * mn <= w) {
mx = total;
ans = sum * mn;
who = mask;
} else if(total == mx && sum * mn <= ans) {
ans = sum * mn;
who = mask;
}
}
std::cout << __builtin_popcount(who) << endl;
for (int i = 0; i < n; i ++) if (HAS(who, i)) {
std::cout << i + 1 << endl;
}
return 0;
}
std::sort(arr, arr + n, [](const auto &x, const auto &y) {
if (x.first * y.second == x.second * y.first) {
return x.second < y.second;
}
return x.first * y.second < x.second * y.first;
});
ll best = 0;
long double best2 = 1e18;
ll best_ind = -1;
{
std::priority_queue<std::pair<ll, ll> > pq = {};
ll sum = 0;
for (ll i = 0; i < n; i ++) {
sum += arr[i].second;
pq.push({arr[i].second, i});
if (i != n - 1 && (arr[i].first * arr[i + 1].second == arr[i].second * arr[i + 1].first)) {
continue;
}
while (sum * arr[i].first > w * arr[i].second) {
sum -= pq.top().first;
pq.pop();
}
long double curr = (long double)sum / arr[i].second * (long double)arr[i].first;
if (pq.size() > best) {
best = pq.size();
best_ind = i;
best2 = curr;
} else if(pq.size() == best) {
if (best2 > curr) {
best2 = curr;
best_ind = i;
}
}
}
}
{
std::priority_queue<std::pair<ll, ll> > pq = {};
ll sum = 0;
for (ll i = 0; i <= best_ind; i ++) {
sum += arr[i].second;
pq.push({arr[i].second, i});
}
while (sum * arr[best_ind].first > w * arr[best_ind].second) {
sum -= pq.top().first;
pq.pop();
}
std::cout << pq.size() << endl;
std::vector<ll> ret = {};
while(!pq.empty()) {
ret.push_back(pq.top().second + 1);
pq.pop();
}
std::sort(ret.begin(), ret.end());
for (const auto it : ret) {
std::cout << it << endl;
}
}
return 0;
}
Compilation message
hiring.cpp: In function 'int main()':
hiring.cpp:86:18: warning: comparison of integer expressions of different signedness: 'std::priority_queue<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
86 | if (pq.size() > best) {
| ~~~~~~~~~~^~~~~~
hiring.cpp:90:24: warning: comparison of integer expressions of different signedness: 'std::priority_queue<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
90 | } else if(pq.size() == best) {
| ~~~~~~~~~~^~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
10 ms |
504 KB |
Output is correct |
5 |
Correct |
75 ms |
348 KB |
Output is correct |
6 |
Partially correct |
1 ms |
504 KB |
Partially correct |
7 |
Partially correct |
1 ms |
344 KB |
Partially correct |
8 |
Partially correct |
1 ms |
348 KB |
Partially correct |
9 |
Partially correct |
2 ms |
604 KB |
Partially correct |
10 |
Partially correct |
2 ms |
544 KB |
Partially correct |
11 |
Partially correct |
3 ms |
600 KB |
Partially correct |
12 |
Partially correct |
4 ms |
860 KB |
Partially correct |
13 |
Partially correct |
3 ms |
604 KB |
Partially correct |
14 |
Partially correct |
6 ms |
3084 KB |
Partially correct |
15 |
Partially correct |
6 ms |
3092 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
0 ms |
348 KB |
Partially correct |
2 |
Partially correct |
1 ms |
348 KB |
Partially correct |
3 |
Partially correct |
0 ms |
348 KB |
Partially correct |
4 |
Partially correct |
8 ms |
3040 KB |
Partially correct |
5 |
Partially correct |
19 ms |
3676 KB |
Partially correct |
6 |
Partially correct |
148 ms |
16324 KB |
Partially correct |
7 |
Partially correct |
190 ms |
24120 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
344 KB |
Partially correct |
2 |
Partially correct |
1 ms |
344 KB |
Partially correct |
3 |
Partially correct |
1 ms |
348 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
604 KB |
Partially correct |
2 |
Partially correct |
1 ms |
348 KB |
Partially correct |
3 |
Partially correct |
1 ms |
348 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
348 KB |
Partially correct |
2 |
Partially correct |
1 ms |
348 KB |
Partially correct |
3 |
Partially correct |
1 ms |
348 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
56 ms |
6748 KB |
Partially correct |
2 |
Partially correct |
55 ms |
6960 KB |
Partially correct |
3 |
Partially correct |
55 ms |
6744 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
89 ms |
14712 KB |
Partially correct |
2 |
Partially correct |
88 ms |
13708 KB |
Partially correct |
3 |
Partially correct |
93 ms |
14912 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
230 ms |
25896 KB |
Partially correct |
2 |
Partially correct |
229 ms |
25812 KB |
Partially correct |
3 |
Partially correct |
230 ms |
25608 KB |
Partially correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
271 ms |
26032 KB |
Partially correct |
2 |
Partially correct |
264 ms |
26144 KB |
Partially correct |
3 |
Partially correct |
263 ms |
26636 KB |
Partially correct |