| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 446141 | wind_reaper | Schools (IZhO13_school) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
*/
using namespace std;
// using namespace __gnu_pbds;
using namespace chrono;
// mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
/*
template <class T> using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;
*/
//***************** CONSTANTS *****************
//***************** GLOBAL VARIABLES *****************
//***************** AUXILIARY STRUCTS *****************
//***************** MAIN BODY *****************
void solve(){
int N, M, S;
cin >> N >> M >> S;
vector<array<int64_t, 2>> A(N);
for(auto& [x, y] : A)
cin >> x >> y;
sort(A.begin(), A.end(), [](array<int64_t, 2> a, array<int64_t, 2> b){
return a[0] - a[1] < b[0] - b[1];
});
priority_queue<int64_t> pq;
int64_t sum = 0;
for(int i = 0; i < N; i++){
pq.push(-A[i][1]);
sum += A[i][1];
while(pq.size() > S){
sum += pq.top();
pq.pop();
}
A[i][1] = sum;
}
while(!pq.empty()) pq.pop();
sum = 0;
int64_t ans = 0;
for(int i = N - 1; i >= 0; --i){
pq.push(-A[i][0]);
sum += A[i][0];
while(pq.size() > M){
sum += pq.top();
pq.pop();
}
ans = max(ans, sum + (i ? A[i-1][1] : 0LL));
}
cout << ans << '\n';
}
//***************** *****************
int32_t main(){
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
#ifdef LOCAL
auto begin = high_resolution_clock::now();
#endif
int tc = 1;
// cin >> tc;
for (int t = 0; t < tc; t++)
solve();
#ifdef LOCAL
auto end = high_resolution_clock::now();
cout << fixed << setprecision(4);
cout << "Execution Time: " << duration_cast<duration<double>>(end - begin).count() << "seconds" << endl;
#endif
return 0;
}
/*
If code gives a WA, check for the following :
1. I/O format
2. Are you clearing all global variables in between tests if multitests are a thing
3. Can you definitively prove the logic
*/