#include <bits/stdc++.h>
#define pii pair<int, int>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
#define ld long double
#define sz(v) int(v.size())
#define all(v) v.begin(), v.end()
#define vec vector<int>
#define dead not_bad
#define left not_right
#define y1 what
using namespace std;
const int N = (int) 3e4 + 10;
const int M = (int) 2e4 + 10;
const ll LINF = (ll) 1e18;
const int INF = (int) 1e9 + 7;
const double PI = 3.14159265359;
const double EPS = (double) 1e-9;
int nx[8] = {-1, -2, -2, -1, 1, 1, 2, 2};
int ny[8] = {-2, -1, 1, 2, -2, 2, -1, 1};
int n, m;
int b[N], p[N];
ll d[N];
bool u[N];
vec v[N];
int main() {
#define fn "teams"
#ifdef witch
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#else
//freopen(fn".in", "r", stdin);
//freopen(fn".out", "w", stdout);
#endif
cin >> n >> m;
for (int i = 0; i < m; i++) {
cin >> b[i] >> p[i];
v[b[i]].pb(i);
d[i] = LINF;
}
d[0] = 0;
for (int iter = 1; iter < m; iter++) {
int id = -1;
for (int i = 0; i < m; i++) {
if (!u[i] && (id == -1 || d[id] > d[i])) {
id = i;
}
}
if (id == -1 || d[id] == LINF)
break;
if (id == 1)
break;
u[id] = 1;
for (int x = b[id], step = 0; x < n; x += p[id], ++step) {
for (auto it : v[x]) {
if (d[id] + step < d[it]) {
d[it] = d[id] + step;
}
}
}
for (int x = b[id], step = 0; x >= 0; x -= p[id], ++step) {
for (auto it : v[x]) {
if (d[id] + step < d[it]) {
d[it] = d[id] + step;
}
}
}
}
if (d[1] == LINF)
d[1] = -1;
cout << d[1];
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
1016 KB |
Output is correct |
2 |
Correct |
2 ms |
1120 KB |
Output is correct |
3 |
Correct |
2 ms |
1192 KB |
Output is correct |
4 |
Correct |
2 ms |
1248 KB |
Output is correct |
5 |
Correct |
2 ms |
1248 KB |
Output is correct |
6 |
Correct |
2 ms |
1248 KB |
Output is correct |
7 |
Correct |
2 ms |
1248 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
1248 KB |
Output is correct |
2 |
Correct |
2 ms |
1248 KB |
Output is correct |
3 |
Correct |
2 ms |
1248 KB |
Output is correct |
4 |
Correct |
2 ms |
1248 KB |
Output is correct |
5 |
Correct |
2 ms |
1248 KB |
Output is correct |
6 |
Correct |
3 ms |
1260 KB |
Output is correct |
7 |
Correct |
2 ms |
1260 KB |
Output is correct |
8 |
Correct |
2 ms |
1320 KB |
Output is correct |
9 |
Correct |
2 ms |
1320 KB |
Output is correct |
10 |
Correct |
2 ms |
1320 KB |
Output is correct |
11 |
Correct |
3 ms |
1320 KB |
Output is correct |
12 |
Correct |
3 ms |
1320 KB |
Output is correct |
13 |
Correct |
18 ms |
1320 KB |
Output is correct |
14 |
Correct |
11 ms |
1320 KB |
Output is correct |
15 |
Correct |
11 ms |
1320 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
1320 KB |
Output is correct |
2 |
Correct |
2 ms |
1320 KB |
Output is correct |
3 |
Correct |
2 ms |
1320 KB |
Output is correct |
4 |
Correct |
2 ms |
1320 KB |
Output is correct |
5 |
Correct |
2 ms |
1320 KB |
Output is correct |
6 |
Correct |
2 ms |
1320 KB |
Output is correct |
7 |
Correct |
2 ms |
1320 KB |
Output is correct |
8 |
Correct |
2 ms |
1320 KB |
Output is correct |
9 |
Correct |
2 ms |
1320 KB |
Output is correct |
10 |
Correct |
2 ms |
1320 KB |
Output is correct |
11 |
Correct |
4 ms |
1320 KB |
Output is correct |
12 |
Correct |
3 ms |
1320 KB |
Output is correct |
13 |
Correct |
18 ms |
1320 KB |
Output is correct |
14 |
Correct |
11 ms |
1320 KB |
Output is correct |
15 |
Correct |
11 ms |
1320 KB |
Output is correct |
16 |
Correct |
3 ms |
1320 KB |
Output is correct |
17 |
Correct |
8 ms |
1320 KB |
Output is correct |
18 |
Correct |
2 ms |
1320 KB |
Output is correct |
19 |
Correct |
2 ms |
1320 KB |
Output is correct |
20 |
Correct |
21 ms |
1420 KB |
Output is correct |
21 |
Correct |
3 ms |
1420 KB |
Output is correct |
22 |
Correct |
3 ms |
1420 KB |
Output is correct |
23 |
Correct |
5 ms |
1420 KB |
Output is correct |
24 |
Correct |
11 ms |
1420 KB |
Output is correct |
25 |
Correct |
5 ms |
1500 KB |
Output is correct |
26 |
Correct |
3 ms |
1500 KB |
Output is correct |
27 |
Correct |
4 ms |
1500 KB |
Output is correct |
28 |
Correct |
12 ms |
1500 KB |
Output is correct |
29 |
Correct |
4 ms |
1500 KB |
Output is correct |
30 |
Correct |
2 ms |
1500 KB |
Output is correct |
31 |
Correct |
4 ms |
1500 KB |
Output is correct |
32 |
Correct |
3 ms |
1500 KB |
Output is correct |
33 |
Correct |
12 ms |
1500 KB |
Output is correct |
34 |
Correct |
13 ms |
1500 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
1500 KB |
Output is correct |
2 |
Correct |
2 ms |
1500 KB |
Output is correct |
3 |
Correct |
2 ms |
1500 KB |
Output is correct |
4 |
Correct |
2 ms |
1500 KB |
Output is correct |
5 |
Correct |
2 ms |
1500 KB |
Output is correct |
6 |
Correct |
2 ms |
1500 KB |
Output is correct |
7 |
Correct |
2 ms |
1500 KB |
Output is correct |
8 |
Correct |
2 ms |
1500 KB |
Output is correct |
9 |
Correct |
2 ms |
1500 KB |
Output is correct |
10 |
Correct |
3 ms |
1500 KB |
Output is correct |
11 |
Correct |
3 ms |
1500 KB |
Output is correct |
12 |
Correct |
3 ms |
1500 KB |
Output is correct |
13 |
Correct |
18 ms |
1500 KB |
Output is correct |
14 |
Correct |
12 ms |
1500 KB |
Output is correct |
15 |
Correct |
13 ms |
1500 KB |
Output is correct |
16 |
Correct |
2 ms |
1500 KB |
Output is correct |
17 |
Correct |
8 ms |
1500 KB |
Output is correct |
18 |
Correct |
3 ms |
1500 KB |
Output is correct |
19 |
Correct |
3 ms |
1500 KB |
Output is correct |
20 |
Correct |
21 ms |
1500 KB |
Output is correct |
21 |
Correct |
3 ms |
1500 KB |
Output is correct |
22 |
Correct |
2 ms |
1500 KB |
Output is correct |
23 |
Correct |
4 ms |
1500 KB |
Output is correct |
24 |
Correct |
12 ms |
1500 KB |
Output is correct |
25 |
Correct |
6 ms |
1500 KB |
Output is correct |
26 |
Correct |
3 ms |
1500 KB |
Output is correct |
27 |
Correct |
4 ms |
1500 KB |
Output is correct |
28 |
Correct |
13 ms |
1500 KB |
Output is correct |
29 |
Correct |
4 ms |
1500 KB |
Output is correct |
30 |
Correct |
2 ms |
1500 KB |
Output is correct |
31 |
Correct |
3 ms |
1500 KB |
Output is correct |
32 |
Correct |
3 ms |
1500 KB |
Output is correct |
33 |
Correct |
13 ms |
1500 KB |
Output is correct |
34 |
Correct |
13 ms |
1500 KB |
Output is correct |
35 |
Execution timed out |
1065 ms |
1900 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
1900 KB |
Output is correct |
2 |
Correct |
2 ms |
1900 KB |
Output is correct |
3 |
Correct |
2 ms |
1900 KB |
Output is correct |
4 |
Correct |
2 ms |
1900 KB |
Output is correct |
5 |
Correct |
2 ms |
1900 KB |
Output is correct |
6 |
Correct |
2 ms |
1900 KB |
Output is correct |
7 |
Correct |
2 ms |
1900 KB |
Output is correct |
8 |
Correct |
2 ms |
1900 KB |
Output is correct |
9 |
Correct |
2 ms |
1900 KB |
Output is correct |
10 |
Correct |
2 ms |
1900 KB |
Output is correct |
11 |
Correct |
3 ms |
1900 KB |
Output is correct |
12 |
Correct |
3 ms |
1900 KB |
Output is correct |
13 |
Correct |
22 ms |
1900 KB |
Output is correct |
14 |
Correct |
11 ms |
1900 KB |
Output is correct |
15 |
Correct |
11 ms |
1900 KB |
Output is correct |
16 |
Correct |
2 ms |
1900 KB |
Output is correct |
17 |
Correct |
8 ms |
1900 KB |
Output is correct |
18 |
Correct |
2 ms |
1900 KB |
Output is correct |
19 |
Correct |
2 ms |
1900 KB |
Output is correct |
20 |
Correct |
26 ms |
1900 KB |
Output is correct |
21 |
Correct |
2 ms |
1900 KB |
Output is correct |
22 |
Correct |
2 ms |
1900 KB |
Output is correct |
23 |
Correct |
5 ms |
1900 KB |
Output is correct |
24 |
Correct |
11 ms |
1900 KB |
Output is correct |
25 |
Correct |
7 ms |
1900 KB |
Output is correct |
26 |
Correct |
3 ms |
1900 KB |
Output is correct |
27 |
Correct |
4 ms |
1900 KB |
Output is correct |
28 |
Correct |
12 ms |
1900 KB |
Output is correct |
29 |
Correct |
4 ms |
1900 KB |
Output is correct |
30 |
Correct |
2 ms |
1900 KB |
Output is correct |
31 |
Correct |
3 ms |
1900 KB |
Output is correct |
32 |
Correct |
3 ms |
1900 KB |
Output is correct |
33 |
Correct |
12 ms |
1900 KB |
Output is correct |
34 |
Correct |
12 ms |
1900 KB |
Output is correct |
35 |
Execution timed out |
1063 ms |
1900 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |