#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const int N = 200000;
ll a[N+5][2], b[N+5][2];
int main(){
ios_base::sync_with_stdio(false), cin.tie(0);
cout.precision(10);
cout << fixed;
int n;
cin >> n;
ll res = 0;
for(int i=1; i<=2*n; i++){
int x, y;
cin >> x >> y;
if(x < 1){
res += 1 - x;
x = 1;
}
if(x > n){
res += x - n;
x = n;
}
if(y < 1){
res += 1 - y;
y = 1;
}
if(y > 2){
res += y - 2;
y = 2;
}
a[x][2 - y]++;
}
for(int i=1; i<=n; i++) b[i][0] = 1;
for(int i=1; i<=n; i++) b[i][1] = 1;
ll c0 = 0, c1 = 0;
for(int i=1; i<=n; i++){
ll k = min(a[i][0], b[i][0]);
a[i][0] -= k, b[i][0] -= k;
k = min(a[i][1], b[i][1]);
a[i][1] -= k, b[i][1] -= k;
k = max(0LL, min(c0, a[i][0]));
res += i*k;
c0 -= k, a[i][0] -= k;
k = max(0LL, min(c1, a[i][1]));
res += i*k;
c1 -= k, a[i][1] -= k;
k = max(0LL, min(c1, a[i][0]));
res += (i + 1)*k;
c1 -= k, a[i][0] -= k;
k = max(0LL, min(c0, a[i][1]));
res += (i + 1)*k;
c0 -= k, a[i][1] -= k;
if(c0 < 0 && b[i][0]){
b[i][0] = 0;
res += i;
c0++;
}
if(c1 < 0 && b[i][1]){
b[i][1] = 0;
res += i;
c1++;
}
if(a[i][0] && b[i][1]){
a[i][0]--, b[i][1] = 0;
res++;
}
if(a[i][1] && b[i][0]){
a[i][1]--, b[i][0] = 0;
res++;
}
if(c1 < 0 && b[i][0]){
b[i][0] = 0;
res += i + 1;
c1++;
}
if(c0 < 0 && b[i][1]){
b[i][1] = 0;
res += i + 1;
c0++;
}
res -= i*a[i][0];
c0 -= a[i][0];
res -= i*a[i][1];
c1 -= a[i][1];
if(b[i][0]){
res -= i;
c0++;
}
if(b[i][1]){
res -= i;
c1++;
}
}
if(c0 || c1) cout << "-1\n";
else cout << res << "\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 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 |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
212 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
1 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
332 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 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 |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
212 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
1 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
332 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
384 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
1 ms |
340 KB |
Output is correct |
43 |
Correct |
1 ms |
344 KB |
Output is correct |
44 |
Correct |
1 ms |
340 KB |
Output is correct |
45 |
Correct |
1 ms |
340 KB |
Output is correct |
46 |
Correct |
1 ms |
340 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
1 ms |
340 KB |
Output is correct |
49 |
Correct |
1 ms |
340 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
380 KB |
Output is correct |
53 |
Correct |
1 ms |
340 KB |
Output is correct |
54 |
Correct |
1 ms |
340 KB |
Output is correct |
55 |
Correct |
1 ms |
340 KB |
Output is correct |
56 |
Correct |
1 ms |
340 KB |
Output is correct |
57 |
Correct |
1 ms |
344 KB |
Output is correct |
58 |
Correct |
1 ms |
340 KB |
Output is correct |
59 |
Correct |
2 ms |
340 KB |
Output is correct |
60 |
Correct |
1 ms |
340 KB |
Output is correct |
61 |
Correct |
1 ms |
344 KB |
Output is correct |
62 |
Correct |
1 ms |
380 KB |
Output is correct |
63 |
Correct |
1 ms |
348 KB |
Output is correct |
64 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 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 |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
212 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
1 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
332 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
384 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
1 ms |
340 KB |
Output is correct |
43 |
Correct |
1 ms |
344 KB |
Output is correct |
44 |
Correct |
1 ms |
340 KB |
Output is correct |
45 |
Correct |
1 ms |
340 KB |
Output is correct |
46 |
Correct |
1 ms |
340 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
1 ms |
340 KB |
Output is correct |
49 |
Correct |
1 ms |
340 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
380 KB |
Output is correct |
53 |
Correct |
1 ms |
340 KB |
Output is correct |
54 |
Correct |
1 ms |
340 KB |
Output is correct |
55 |
Correct |
1 ms |
340 KB |
Output is correct |
56 |
Correct |
1 ms |
340 KB |
Output is correct |
57 |
Correct |
1 ms |
344 KB |
Output is correct |
58 |
Correct |
1 ms |
340 KB |
Output is correct |
59 |
Correct |
2 ms |
340 KB |
Output is correct |
60 |
Correct |
1 ms |
340 KB |
Output is correct |
61 |
Correct |
1 ms |
344 KB |
Output is correct |
62 |
Correct |
1 ms |
380 KB |
Output is correct |
63 |
Correct |
1 ms |
348 KB |
Output is correct |
64 |
Correct |
1 ms |
340 KB |
Output is correct |
65 |
Correct |
31 ms |
4956 KB |
Output is correct |
66 |
Correct |
63 ms |
8120 KB |
Output is correct |
67 |
Correct |
47 ms |
6624 KB |
Output is correct |
68 |
Correct |
44 ms |
6608 KB |
Output is correct |
69 |
Correct |
46 ms |
6616 KB |
Output is correct |
70 |
Correct |
44 ms |
6620 KB |
Output is correct |
71 |
Correct |
46 ms |
6604 KB |
Output is correct |
72 |
Correct |
51 ms |
6584 KB |
Output is correct |
73 |
Correct |
45 ms |
6608 KB |
Output is correct |
74 |
Correct |
40 ms |
6596 KB |
Output is correct |
75 |
Correct |
42 ms |
6476 KB |
Output is correct |
76 |
Correct |
40 ms |
6604 KB |
Output is correct |
77 |
Correct |
47 ms |
6592 KB |
Output is correct |
78 |
Correct |
39 ms |
6612 KB |
Output is correct |
79 |
Correct |
41 ms |
6604 KB |
Output is correct |
80 |
Correct |
41 ms |
6600 KB |
Output is correct |
81 |
Correct |
39 ms |
6600 KB |
Output is correct |
82 |
Correct |
41 ms |
6604 KB |
Output is correct |
83 |
Correct |
39 ms |
6616 KB |
Output is correct |
84 |
Correct |
44 ms |
6608 KB |
Output is correct |
85 |
Correct |
42 ms |
6556 KB |
Output is correct |
86 |
Correct |
44 ms |
6540 KB |
Output is correct |
87 |
Correct |
42 ms |
6580 KB |
Output is correct |
88 |
Correct |
41 ms |
6612 KB |
Output is correct |
89 |
Correct |
43 ms |
6612 KB |
Output is correct |
90 |
Correct |
44 ms |
6612 KB |
Output is correct |
91 |
Correct |
59 ms |
6616 KB |
Output is correct |
92 |
Correct |
41 ms |
6620 KB |
Output is correct |
93 |
Correct |
48 ms |
6620 KB |
Output is correct |
94 |
Correct |
43 ms |
6484 KB |
Output is correct |
95 |
Correct |
38 ms |
6480 KB |
Output is correct |
96 |
Correct |
42 ms |
6692 KB |
Output is correct |
97 |
Correct |
43 ms |
6588 KB |
Output is correct |
98 |
Correct |
43 ms |
6600 KB |
Output is correct |
99 |
Correct |
40 ms |
6544 KB |
Output is correct |
100 |
Correct |
41 ms |
6548 KB |
Output is correct |
101 |
Correct |
41 ms |
6532 KB |
Output is correct |
102 |
Correct |
39 ms |
6580 KB |
Output is correct |
103 |
Correct |
46 ms |
6604 KB |
Output is correct |