#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector <ll>;
using ii = pair <ll, ll>;
using vii = vector <ii>;
ll freq[100005][3];
// ii operator+ (const ii a, const ii b) { return ii{ a.first + b.first, a.second + b.second, }; }
// ii operator- (const ii a, const ii b) { return ii{ a.first - b.first, a.second - b.second, }; }
// ii operator+= (ii &a, const ii b) { return a = a + b; }
// ostream& operator<< (ostream &os, const ii a) { return os << a.first << ' ' << a.second; }
int main () {
cin.tie(nullptr) -> sync_with_stdio(false);
ll n;
cin >> n;
vii ve(2*n);
for (auto &[x, y] : ve) cin >> x >> y;
ll ans = 0;
auto fclamp = [&](ll l, ll r, ll &val) {
if (val < l) { ans += l-val; val = l; }
if (val > r) { ans += val-r; val = r; }
};
for (auto &[x, y] : ve) {
fclamp(1, n, x);
fclamp(1, 2, y);
freq[x][y]++;
}
ll c1 = 0, c2 = 0; // ci = until the current prefix, how many free coins are in row i (negative to show lack of)
for (ll i = 1; i <= n; i++) {
c1 += freq[i][1]-1; // -1 = consumes one
c2 += freq[i][2]-1; // -1 = consumes one
// 4 cases, only in 2 we do something
if (c1 < 0 && c2 > 0) { // shortage in c1 that's satisfied by c2
ll t = min(-c1, c2);
// ll t = 1;
c1 += t; c2 -= t;
ans += t;
} else if (c2 < 0 && c1 > 0) { // vice versa
ll t = min(-c2, c1);
// ll t = 1;
c2 += t; c1 -= t;
ans += t;
}
// ans += abs(val) because if val is positive, #val coins have to move out, if val is negative, #-val coins have to eventually come in
ans += abs(c1);
ans += abs(c2);
}
cout << ans << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
464 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
0 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
344 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
0 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
464 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
0 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
344 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
0 ms |
348 KB |
Output is correct |
| 34 |
Correct |
0 ms |
348 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
1 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
344 KB |
Output is correct |
| 39 |
Correct |
0 ms |
348 KB |
Output is correct |
| 40 |
Correct |
0 ms |
348 KB |
Output is correct |
| 41 |
Correct |
1 ms |
348 KB |
Output is correct |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
348 KB |
Output is correct |
| 44 |
Correct |
1 ms |
520 KB |
Output is correct |
| 45 |
Correct |
1 ms |
344 KB |
Output is correct |
| 46 |
Correct |
1 ms |
348 KB |
Output is correct |
| 47 |
Correct |
1 ms |
348 KB |
Output is correct |
| 48 |
Correct |
0 ms |
348 KB |
Output is correct |
| 49 |
Correct |
1 ms |
348 KB |
Output is correct |
| 50 |
Correct |
0 ms |
348 KB |
Output is correct |
| 51 |
Correct |
1 ms |
344 KB |
Output is correct |
| 52 |
Correct |
1 ms |
348 KB |
Output is correct |
| 53 |
Correct |
1 ms |
348 KB |
Output is correct |
| 54 |
Correct |
1 ms |
348 KB |
Output is correct |
| 55 |
Correct |
1 ms |
348 KB |
Output is correct |
| 56 |
Correct |
1 ms |
348 KB |
Output is correct |
| 57 |
Correct |
1 ms |
604 KB |
Output is correct |
| 58 |
Correct |
1 ms |
348 KB |
Output is correct |
| 59 |
Correct |
1 ms |
344 KB |
Output is correct |
| 60 |
Correct |
1 ms |
348 KB |
Output is correct |
| 61 |
Correct |
1 ms |
348 KB |
Output is correct |
| 62 |
Correct |
1 ms |
524 KB |
Output is correct |
| 63 |
Correct |
1 ms |
348 KB |
Output is correct |
| 64 |
Correct |
1 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
464 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
0 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
344 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
0 ms |
348 KB |
Output is correct |
| 34 |
Correct |
0 ms |
348 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
1 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
344 KB |
Output is correct |
| 39 |
Correct |
0 ms |
348 KB |
Output is correct |
| 40 |
Correct |
0 ms |
348 KB |
Output is correct |
| 41 |
Correct |
1 ms |
348 KB |
Output is correct |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
348 KB |
Output is correct |
| 44 |
Correct |
1 ms |
520 KB |
Output is correct |
| 45 |
Correct |
1 ms |
344 KB |
Output is correct |
| 46 |
Correct |
1 ms |
348 KB |
Output is correct |
| 47 |
Correct |
1 ms |
348 KB |
Output is correct |
| 48 |
Correct |
0 ms |
348 KB |
Output is correct |
| 49 |
Correct |
1 ms |
348 KB |
Output is correct |
| 50 |
Correct |
0 ms |
348 KB |
Output is correct |
| 51 |
Correct |
1 ms |
344 KB |
Output is correct |
| 52 |
Correct |
1 ms |
348 KB |
Output is correct |
| 53 |
Correct |
1 ms |
348 KB |
Output is correct |
| 54 |
Correct |
1 ms |
348 KB |
Output is correct |
| 55 |
Correct |
1 ms |
348 KB |
Output is correct |
| 56 |
Correct |
1 ms |
348 KB |
Output is correct |
| 57 |
Correct |
1 ms |
604 KB |
Output is correct |
| 58 |
Correct |
1 ms |
348 KB |
Output is correct |
| 59 |
Correct |
1 ms |
344 KB |
Output is correct |
| 60 |
Correct |
1 ms |
348 KB |
Output is correct |
| 61 |
Correct |
1 ms |
348 KB |
Output is correct |
| 62 |
Correct |
1 ms |
524 KB |
Output is correct |
| 63 |
Correct |
1 ms |
348 KB |
Output is correct |
| 64 |
Correct |
1 ms |
600 KB |
Output is correct |
| 65 |
Correct |
19 ms |
7448 KB |
Output is correct |
| 66 |
Correct |
31 ms |
8192 KB |
Output is correct |
| 67 |
Correct |
29 ms |
8960 KB |
Output is correct |
| 68 |
Correct |
29 ms |
9040 KB |
Output is correct |
| 69 |
Correct |
35 ms |
8960 KB |
Output is correct |
| 70 |
Correct |
29 ms |
9052 KB |
Output is correct |
| 71 |
Correct |
28 ms |
9092 KB |
Output is correct |
| 72 |
Correct |
27 ms |
6660 KB |
Output is correct |
| 73 |
Correct |
28 ms |
6736 KB |
Output is correct |
| 74 |
Correct |
29 ms |
6748 KB |
Output is correct |
| 75 |
Correct |
27 ms |
6484 KB |
Output is correct |
| 76 |
Correct |
27 ms |
6772 KB |
Output is correct |
| 77 |
Correct |
27 ms |
6748 KB |
Output is correct |
| 78 |
Correct |
28 ms |
6788 KB |
Output is correct |
| 79 |
Correct |
33 ms |
6868 KB |
Output is correct |
| 80 |
Correct |
29 ms |
6748 KB |
Output is correct |
| 81 |
Correct |
27 ms |
6748 KB |
Output is correct |
| 82 |
Correct |
30 ms |
6664 KB |
Output is correct |
| 83 |
Correct |
27 ms |
6800 KB |
Output is correct |
| 84 |
Correct |
27 ms |
6912 KB |
Output is correct |
| 85 |
Correct |
27 ms |
7004 KB |
Output is correct |
| 86 |
Correct |
29 ms |
8512 KB |
Output is correct |
| 87 |
Correct |
31 ms |
8536 KB |
Output is correct |
| 88 |
Correct |
27 ms |
8968 KB |
Output is correct |
| 89 |
Correct |
30 ms |
9040 KB |
Output is correct |
| 90 |
Correct |
28 ms |
9040 KB |
Output is correct |
| 91 |
Correct |
28 ms |
9044 KB |
Output is correct |
| 92 |
Correct |
26 ms |
9040 KB |
Output is correct |
| 93 |
Correct |
26 ms |
9044 KB |
Output is correct |
| 94 |
Correct |
27 ms |
8840 KB |
Output is correct |
| 95 |
Correct |
26 ms |
8796 KB |
Output is correct |
| 96 |
Correct |
32 ms |
8432 KB |
Output is correct |
| 97 |
Correct |
27 ms |
8536 KB |
Output is correct |
| 98 |
Correct |
33 ms |
7920 KB |
Output is correct |
| 99 |
Correct |
27 ms |
7764 KB |
Output is correct |
| 100 |
Correct |
28 ms |
7808 KB |
Output is correct |
| 101 |
Correct |
27 ms |
8016 KB |
Output is correct |
| 102 |
Correct |
26 ms |
7776 KB |
Output is correct |
| 103 |
Correct |
27 ms |
7816 KB |
Output is correct |
