#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
#define ln '\n'
#define int long long
template <class _T>
bool chmin(_T &x, const _T &y){
bool flag = false;
if ( x > y ){
x = y; flag |= true;
}
return flag;
}
template <class _T>
bool chmax(_T &x, const _T &y){
bool flag = false;
if ( x < y ){
x = y; flag |= true;
}
return flag;
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int k, n; cin >> k >> n;
vector <pair<int,int>> p;
int res = 0;
for ( int i = 0; i < n; i++ ){
char a, b;
int x, y;
cin >> a >> x >> b >> y;
if ( x > y ) swap(x, y);
if ( a == b ){
res += y - x;
}
else{
p.pb({x, y});
}
}
res += (int)p.size();
sort(all(p), [&](pair <int,int> &x, pair <int,int> &y){
return x.first + x.second < y.first + y.second;
});
multiset <int> L, R;
int ls = 0, rs = 0;
const int inf = 1e16 + 1;
auto ins = [&](int x){
int Mx = L.empty() ? inf : *L.rbegin();
if ( x <= Mx ){
L.insert(x);
ls += x;
}
else{
R.insert(x);
rs += x;
}
while ( (int)L.size() > (int)R.size() ){
auto l = prev(L.end());
L.erase(l); ls -= *l;
R.insert(*l); rs += *l;
}
while ( (int)R.size() > (int)L.size() ){
auto r = R.begin();
R.erase(r); rs -= *r;
L.insert(*r); ls += *r;
}
return rs - ls;
};
n = (int)p.size();
vector <int> pref(n + 1);
for ( int i = 0; i < n; i++ ){
auto [l, r] = p[i];
ins(l);
pref[i + 1] = ins(r);
}
int ans = pref.back();
if ( k == 2 ){
L.clear(), R.clear();
ls = rs = 0;
for ( int i = n - 1; i >= 0; i-- ){
auto [l, r] = p[i];
ins(l);
chmin(ans, ins(r) + pref[i]);
}
}
cout << ans + res;
cout << '\n';
}
/*
1 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7
2 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
320 KB |
Output is correct |
3 |
Correct |
2 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
352 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
356 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
456 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
316 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
456 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
460 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
92 ms |
12764 KB |
Output is correct |
13 |
Correct |
121 ms |
12892 KB |
Output is correct |
14 |
Correct |
99 ms |
11728 KB |
Output is correct |
15 |
Correct |
64 ms |
8036 KB |
Output is correct |
16 |
Correct |
90 ms |
12860 KB |
Output is correct |
17 |
Correct |
84 ms |
12916 KB |
Output is correct |
18 |
Correct |
70 ms |
12948 KB |
Output is correct |
19 |
Correct |
90 ms |
12916 KB |
Output is correct |
20 |
Correct |
92 ms |
12912 KB |
Output is correct |
21 |
Correct |
87 ms |
12956 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
320 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
320 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
324 KB |
Output is correct |
2 |
Correct |
0 ms |
316 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
316 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
2 ms |
340 KB |
Output is correct |
14 |
Correct |
2 ms |
340 KB |
Output is correct |
15 |
Correct |
2 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
2 ms |
460 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
2 ms |
340 KB |
Output is correct |
22 |
Correct |
2 ms |
456 KB |
Output is correct |
23 |
Correct |
2 ms |
340 KB |
Output is correct |
24 |
Correct |
2 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
324 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
316 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
328 KB |
Output is correct |
8 |
Correct |
1 ms |
316 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
2 ms |
356 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
464 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
2 ms |
460 KB |
Output is correct |
23 |
Correct |
2 ms |
340 KB |
Output is correct |
24 |
Correct |
2 ms |
340 KB |
Output is correct |
25 |
Correct |
156 ms |
12916 KB |
Output is correct |
26 |
Correct |
221 ms |
13012 KB |
Output is correct |
27 |
Correct |
256 ms |
13760 KB |
Output is correct |
28 |
Correct |
238 ms |
14320 KB |
Output is correct |
29 |
Correct |
240 ms |
14336 KB |
Output is correct |
30 |
Correct |
95 ms |
7732 KB |
Output is correct |
31 |
Correct |
160 ms |
13668 KB |
Output is correct |
32 |
Correct |
142 ms |
14348 KB |
Output is correct |
33 |
Correct |
115 ms |
14008 KB |
Output is correct |
34 |
Correct |
147 ms |
14320 KB |
Output is correct |
35 |
Correct |
161 ms |
13872 KB |
Output is correct |
36 |
Correct |
144 ms |
14004 KB |
Output is correct |
37 |
Correct |
166 ms |
12784 KB |
Output is correct |