//______________"In The Name Of GOD"______________
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <ll, ll> pll;
typedef pair <int, int> pii;
const int lg = 20;
const int mod = 1e9 + 7;
const ll inf = 1e9 + 100;
const int maxn = 3e3 + 100;
#define cl clear
#define F first
#define S second
#define pb push_back
#define Sz(x) int((x).size())
#define all(x) (x).begin(), (x).end()
int a[maxn], b[maxn], ps[maxn], q, n;
vector <int> vc[maxn];
multiset <int> s;
inline int cal(int ind){
fill(ps, ps + n, 0);
s.cl();
for(int i = 0; i < n; i ++) vc[i].cl();
for(int i = 0; i < q; i ++) a[i] = (a[i] - ind + n) % n, b[i] = (b[i] - ind + n) % n;
for(int i = 0; i < q; i ++) {
ps[min(a[i], b[i])] ++;
ps[max(a[i], b[i])] --;
vc[min(a[i], b[i])].pb(max(a[i], b[i]));
}
int ans = 0;
for(int i = 0; i < n; i ++){
while(!s.empty() && *s.begin() == i) s.erase(s.begin());
if(i) ps[i] += ps[i - 1];
for(auto x : vc[i]) s.insert(x);
while(!s.empty() && ps[i] > 0){
int t = *s.rbegin();
ps[i] -= 2, ps[t] += 2;
s.erase(s.find(t));
ans ++;
}
}
for(int i = 0; i < q; i ++) a[i] = (a[i] + ind + n) % n, b[i] = (b[i] + ind + n) % n;
return ans;
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0);cout.tie(0);
cin >> n >> q;
for(int i = 0, c; i < q; i ++) cin >> a[i] >> b[i] >> c, a[i] --, b[i] --;
int ans = inf;
for(int i = 0; i < n; i ++) ans = min(ans, cal(i));
cout << ans << '\n';
return 0;
}
/*test case :
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
392 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
400 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 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 |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
392 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
400 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 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 |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
10 ms |
392 KB |
Output is correct |
17 |
Correct |
10 ms |
340 KB |
Output is correct |
18 |
Correct |
10 ms |
340 KB |
Output is correct |
19 |
Correct |
10 ms |
416 KB |
Output is correct |
20 |
Correct |
10 ms |
340 KB |
Output is correct |
21 |
Correct |
10 ms |
340 KB |
Output is correct |
22 |
Correct |
12 ms |
396 KB |
Output is correct |
23 |
Correct |
10 ms |
432 KB |
Output is correct |
24 |
Correct |
10 ms |
340 KB |
Output is correct |
25 |
Correct |
10 ms |
424 KB |
Output is correct |
26 |
Correct |
9 ms |
340 KB |
Output is correct |
27 |
Correct |
10 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
392 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
400 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 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 |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
10 ms |
392 KB |
Output is correct |
17 |
Correct |
10 ms |
340 KB |
Output is correct |
18 |
Correct |
10 ms |
340 KB |
Output is correct |
19 |
Correct |
10 ms |
416 KB |
Output is correct |
20 |
Correct |
10 ms |
340 KB |
Output is correct |
21 |
Correct |
10 ms |
340 KB |
Output is correct |
22 |
Correct |
12 ms |
396 KB |
Output is correct |
23 |
Correct |
10 ms |
432 KB |
Output is correct |
24 |
Correct |
10 ms |
340 KB |
Output is correct |
25 |
Correct |
10 ms |
424 KB |
Output is correct |
26 |
Correct |
9 ms |
340 KB |
Output is correct |
27 |
Correct |
10 ms |
468 KB |
Output is correct |
28 |
Correct |
1185 ms |
696 KB |
Output is correct |
29 |
Correct |
1165 ms |
676 KB |
Output is correct |
30 |
Correct |
1218 ms |
716 KB |
Output is correct |
31 |
Correct |
1149 ms |
920 KB |
Output is correct |
32 |
Correct |
1125 ms |
888 KB |
Output is correct |
33 |
Correct |
1248 ms |
3512 KB |
Output is correct |
34 |
Correct |
1209 ms |
3560 KB |
Output is correct |
35 |
Correct |
1293 ms |
6312 KB |
Output is correct |
36 |
Correct |
1271 ms |
3520 KB |
Output is correct |
37 |
Correct |
833 ms |
552 KB |
Output is correct |
38 |
Correct |
669 ms |
544 KB |
Output is correct |
39 |
Correct |
802 ms |
540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
392 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
400 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 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 |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
10 ms |
392 KB |
Output is correct |
17 |
Correct |
10 ms |
340 KB |
Output is correct |
18 |
Correct |
10 ms |
340 KB |
Output is correct |
19 |
Correct |
10 ms |
416 KB |
Output is correct |
20 |
Correct |
10 ms |
340 KB |
Output is correct |
21 |
Correct |
10 ms |
340 KB |
Output is correct |
22 |
Correct |
12 ms |
396 KB |
Output is correct |
23 |
Correct |
10 ms |
432 KB |
Output is correct |
24 |
Correct |
10 ms |
340 KB |
Output is correct |
25 |
Correct |
10 ms |
424 KB |
Output is correct |
26 |
Correct |
9 ms |
340 KB |
Output is correct |
27 |
Correct |
10 ms |
468 KB |
Output is correct |
28 |
Correct |
1185 ms |
696 KB |
Output is correct |
29 |
Correct |
1165 ms |
676 KB |
Output is correct |
30 |
Correct |
1218 ms |
716 KB |
Output is correct |
31 |
Correct |
1149 ms |
920 KB |
Output is correct |
32 |
Correct |
1125 ms |
888 KB |
Output is correct |
33 |
Correct |
1248 ms |
3512 KB |
Output is correct |
34 |
Correct |
1209 ms |
3560 KB |
Output is correct |
35 |
Correct |
1293 ms |
6312 KB |
Output is correct |
36 |
Correct |
1271 ms |
3520 KB |
Output is correct |
37 |
Correct |
833 ms |
552 KB |
Output is correct |
38 |
Correct |
669 ms |
544 KB |
Output is correct |
39 |
Correct |
802 ms |
540 KB |
Output is correct |
40 |
Runtime error |
2 ms |
980 KB |
Execution killed with signal 11 |
41 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
392 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
400 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 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 |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
10 ms |
392 KB |
Output is correct |
17 |
Correct |
10 ms |
340 KB |
Output is correct |
18 |
Correct |
10 ms |
340 KB |
Output is correct |
19 |
Correct |
10 ms |
416 KB |
Output is correct |
20 |
Correct |
10 ms |
340 KB |
Output is correct |
21 |
Correct |
10 ms |
340 KB |
Output is correct |
22 |
Correct |
12 ms |
396 KB |
Output is correct |
23 |
Correct |
10 ms |
432 KB |
Output is correct |
24 |
Correct |
10 ms |
340 KB |
Output is correct |
25 |
Correct |
10 ms |
424 KB |
Output is correct |
26 |
Correct |
9 ms |
340 KB |
Output is correct |
27 |
Correct |
10 ms |
468 KB |
Output is correct |
28 |
Correct |
1185 ms |
696 KB |
Output is correct |
29 |
Correct |
1165 ms |
676 KB |
Output is correct |
30 |
Correct |
1218 ms |
716 KB |
Output is correct |
31 |
Correct |
1149 ms |
920 KB |
Output is correct |
32 |
Correct |
1125 ms |
888 KB |
Output is correct |
33 |
Correct |
1248 ms |
3512 KB |
Output is correct |
34 |
Correct |
1209 ms |
3560 KB |
Output is correct |
35 |
Correct |
1293 ms |
6312 KB |
Output is correct |
36 |
Correct |
1271 ms |
3520 KB |
Output is correct |
37 |
Correct |
833 ms |
552 KB |
Output is correct |
38 |
Correct |
669 ms |
544 KB |
Output is correct |
39 |
Correct |
802 ms |
540 KB |
Output is correct |
40 |
Runtime error |
2 ms |
980 KB |
Execution killed with signal 11 |
41 |
Halted |
0 ms |
0 KB |
- |