#include <bits/stdc++.h>
#pragma GCC optimize("O2")
#pragma GCC target("avx2,fma")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> pll;
const long long int N = 3e3+20,mod = 1e9+7,inf = 1e9,sq = 400,maxm = 3e4+20;
inline int mkay(int a,int b){
if (a+b >= mod) return a+b-mod;
if (a+b < 0) return a+b+mod;
return a+b;
}
inline int poww(int n,ll k){
int c = 1;
while (k){
if (k&1) c = (1ll*c*n)%mod;
n = (1ll*n*n)%mod;
k >>= 1;
}
return c;
}
int e[N][N],d[N];
int n,a[maxm],p[maxm];
inline void dij(){
priority_queue<pll,vector<pll>,greater<pll>> pq;
pq.push({0,a[0]});
d[a[0]] = 0;
while (!pq.empty()){
pll p = pq.top();
int y = p.Y;
pq.pop();
rep(i,0,n){
if (d[i] > d[y] && d[i]-d[y] > e[y][i]){
d[i] = d[y]+e[y][i];
pq.push({d[i],i});
}
}
}
}
int main(){
ios :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
memset(e,127,sizeof e);
memset(d,127,sizeof d);
ll Inf = d[0];
int m;
cin >> n >> m;
rep(i,0,m){
cin >> a[i] >> p[i];
if (i == 1) continue;
int x = a[i];
int t = 0;
while (x < n){
e[a[i]][x] = min(e[a[i]][x],t);
x += p[i];
t++;
}
x = a[i]-p[i];
t = 1;
while (x >= 0){
e[a[i]][x] = min(e[a[i]][x],t);
t++;
x -= p[i];
}
}
dij();
if (d[a[1]] >= Inf) cout << -1;
else
cout << d[a[1]];
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
35956 KB |
Output is correct |
2 |
Correct |
16 ms |
35916 KB |
Output is correct |
3 |
Correct |
15 ms |
35956 KB |
Output is correct |
4 |
Correct |
15 ms |
35984 KB |
Output is correct |
5 |
Correct |
16 ms |
35980 KB |
Output is correct |
6 |
Correct |
19 ms |
36016 KB |
Output is correct |
7 |
Correct |
17 ms |
35964 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
17 ms |
36024 KB |
Output is correct |
2 |
Correct |
17 ms |
35980 KB |
Output is correct |
3 |
Correct |
19 ms |
35920 KB |
Output is correct |
4 |
Correct |
16 ms |
35988 KB |
Output is correct |
5 |
Correct |
15 ms |
35916 KB |
Output is correct |
6 |
Correct |
15 ms |
36024 KB |
Output is correct |
7 |
Correct |
15 ms |
35916 KB |
Output is correct |
8 |
Correct |
15 ms |
35916 KB |
Output is correct |
9 |
Correct |
19 ms |
35932 KB |
Output is correct |
10 |
Correct |
16 ms |
35976 KB |
Output is correct |
11 |
Correct |
15 ms |
36056 KB |
Output is correct |
12 |
Correct |
17 ms |
36044 KB |
Output is correct |
13 |
Correct |
16 ms |
36044 KB |
Output is correct |
14 |
Correct |
15 ms |
36044 KB |
Output is correct |
15 |
Correct |
16 ms |
36044 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
35964 KB |
Output is correct |
2 |
Correct |
15 ms |
36012 KB |
Output is correct |
3 |
Correct |
16 ms |
35944 KB |
Output is correct |
4 |
Correct |
15 ms |
35916 KB |
Output is correct |
5 |
Correct |
15 ms |
35916 KB |
Output is correct |
6 |
Correct |
15 ms |
36024 KB |
Output is correct |
7 |
Correct |
15 ms |
35980 KB |
Output is correct |
8 |
Correct |
15 ms |
36036 KB |
Output is correct |
9 |
Correct |
15 ms |
35964 KB |
Output is correct |
10 |
Correct |
15 ms |
35916 KB |
Output is correct |
11 |
Correct |
20 ms |
36056 KB |
Output is correct |
12 |
Correct |
16 ms |
36044 KB |
Output is correct |
13 |
Correct |
14 ms |
36044 KB |
Output is correct |
14 |
Correct |
15 ms |
35940 KB |
Output is correct |
15 |
Correct |
15 ms |
36028 KB |
Output is correct |
16 |
Correct |
16 ms |
36044 KB |
Output is correct |
17 |
Correct |
18 ms |
36044 KB |
Output is correct |
18 |
Correct |
16 ms |
35984 KB |
Output is correct |
19 |
Correct |
15 ms |
35916 KB |
Output is correct |
20 |
Correct |
28 ms |
36032 KB |
Output is correct |
21 |
Correct |
20 ms |
35960 KB |
Output is correct |
22 |
Correct |
18 ms |
35928 KB |
Output is correct |
23 |
Correct |
22 ms |
36056 KB |
Output is correct |
24 |
Correct |
27 ms |
36044 KB |
Output is correct |
25 |
Correct |
27 ms |
36072 KB |
Output is correct |
26 |
Correct |
28 ms |
36008 KB |
Output is correct |
27 |
Correct |
22 ms |
35944 KB |
Output is correct |
28 |
Correct |
24 ms |
36044 KB |
Output is correct |
29 |
Correct |
29 ms |
36164 KB |
Output is correct |
30 |
Correct |
24 ms |
36020 KB |
Output is correct |
31 |
Correct |
27 ms |
36052 KB |
Output is correct |
32 |
Correct |
25 ms |
36120 KB |
Output is correct |
33 |
Correct |
29 ms |
36176 KB |
Output is correct |
34 |
Correct |
32 ms |
36056 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
19 ms |
35916 KB |
Output is correct |
2 |
Correct |
19 ms |
35916 KB |
Output is correct |
3 |
Correct |
17 ms |
35928 KB |
Output is correct |
4 |
Correct |
16 ms |
35936 KB |
Output is correct |
5 |
Correct |
15 ms |
35952 KB |
Output is correct |
6 |
Correct |
15 ms |
36016 KB |
Output is correct |
7 |
Correct |
14 ms |
35916 KB |
Output is correct |
8 |
Correct |
15 ms |
35916 KB |
Output is correct |
9 |
Correct |
20 ms |
35916 KB |
Output is correct |
10 |
Correct |
20 ms |
36012 KB |
Output is correct |
11 |
Correct |
17 ms |
36036 KB |
Output is correct |
12 |
Correct |
16 ms |
36028 KB |
Output is correct |
13 |
Correct |
20 ms |
36044 KB |
Output is correct |
14 |
Correct |
15 ms |
36052 KB |
Output is correct |
15 |
Correct |
15 ms |
36044 KB |
Output is correct |
16 |
Correct |
25 ms |
35968 KB |
Output is correct |
17 |
Correct |
22 ms |
36004 KB |
Output is correct |
18 |
Correct |
18 ms |
35964 KB |
Output is correct |
19 |
Correct |
15 ms |
36024 KB |
Output is correct |
20 |
Correct |
23 ms |
36036 KB |
Output is correct |
21 |
Correct |
14 ms |
36044 KB |
Output is correct |
22 |
Correct |
16 ms |
35964 KB |
Output is correct |
23 |
Correct |
21 ms |
36060 KB |
Output is correct |
24 |
Correct |
27 ms |
36076 KB |
Output is correct |
25 |
Correct |
23 ms |
36080 KB |
Output is correct |
26 |
Correct |
22 ms |
35980 KB |
Output is correct |
27 |
Correct |
21 ms |
36060 KB |
Output is correct |
28 |
Correct |
20 ms |
36000 KB |
Output is correct |
29 |
Correct |
42 ms |
36044 KB |
Output is correct |
30 |
Correct |
27 ms |
36036 KB |
Output is correct |
31 |
Correct |
27 ms |
36040 KB |
Output is correct |
32 |
Correct |
24 ms |
36044 KB |
Output is correct |
33 |
Correct |
27 ms |
36128 KB |
Output is correct |
34 |
Correct |
26 ms |
36160 KB |
Output is correct |
35 |
Correct |
27 ms |
36284 KB |
Output is correct |
36 |
Correct |
19 ms |
36040 KB |
Output is correct |
37 |
Correct |
34 ms |
36228 KB |
Output is correct |
38 |
Correct |
40 ms |
36240 KB |
Output is correct |
39 |
Correct |
45 ms |
36244 KB |
Output is correct |
40 |
Correct |
49 ms |
36300 KB |
Output is correct |
41 |
Correct |
37 ms |
36292 KB |
Output is correct |
42 |
Correct |
75 ms |
36192 KB |
Output is correct |
43 |
Correct |
69 ms |
36224 KB |
Output is correct |
44 |
Correct |
69 ms |
36256 KB |
Output is correct |
45 |
Correct |
28 ms |
36300 KB |
Output is correct |
46 |
Correct |
29 ms |
36268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
35916 KB |
Output is correct |
2 |
Correct |
17 ms |
35916 KB |
Output is correct |
3 |
Correct |
19 ms |
35984 KB |
Output is correct |
4 |
Correct |
14 ms |
35916 KB |
Output is correct |
5 |
Correct |
14 ms |
35908 KB |
Output is correct |
6 |
Correct |
14 ms |
35984 KB |
Output is correct |
7 |
Correct |
14 ms |
36016 KB |
Output is correct |
8 |
Correct |
14 ms |
35916 KB |
Output is correct |
9 |
Correct |
14 ms |
35928 KB |
Output is correct |
10 |
Correct |
15 ms |
35916 KB |
Output is correct |
11 |
Correct |
20 ms |
35948 KB |
Output is correct |
12 |
Correct |
14 ms |
36044 KB |
Output is correct |
13 |
Correct |
15 ms |
36044 KB |
Output is correct |
14 |
Correct |
14 ms |
35968 KB |
Output is correct |
15 |
Correct |
14 ms |
36044 KB |
Output is correct |
16 |
Correct |
14 ms |
35916 KB |
Output is correct |
17 |
Correct |
17 ms |
36044 KB |
Output is correct |
18 |
Correct |
17 ms |
35936 KB |
Output is correct |
19 |
Correct |
16 ms |
35916 KB |
Output is correct |
20 |
Correct |
23 ms |
36044 KB |
Output is correct |
21 |
Correct |
15 ms |
36044 KB |
Output is correct |
22 |
Correct |
16 ms |
35920 KB |
Output is correct |
23 |
Correct |
23 ms |
35944 KB |
Output is correct |
24 |
Correct |
27 ms |
35980 KB |
Output is correct |
25 |
Correct |
24 ms |
36084 KB |
Output is correct |
26 |
Correct |
23 ms |
36044 KB |
Output is correct |
27 |
Correct |
22 ms |
36044 KB |
Output is correct |
28 |
Correct |
22 ms |
36004 KB |
Output is correct |
29 |
Correct |
28 ms |
36164 KB |
Output is correct |
30 |
Correct |
25 ms |
36124 KB |
Output is correct |
31 |
Correct |
29 ms |
36140 KB |
Output is correct |
32 |
Correct |
25 ms |
36024 KB |
Output is correct |
33 |
Correct |
29 ms |
36172 KB |
Output is correct |
34 |
Correct |
32 ms |
36220 KB |
Output is correct |
35 |
Correct |
28 ms |
36240 KB |
Output is correct |
36 |
Correct |
21 ms |
36076 KB |
Output is correct |
37 |
Correct |
34 ms |
36164 KB |
Output is correct |
38 |
Correct |
38 ms |
36272 KB |
Output is correct |
39 |
Correct |
37 ms |
36300 KB |
Output is correct |
40 |
Correct |
38 ms |
36300 KB |
Output is correct |
41 |
Correct |
38 ms |
36224 KB |
Output is correct |
42 |
Correct |
68 ms |
36164 KB |
Output is correct |
43 |
Correct |
75 ms |
36164 KB |
Output is correct |
44 |
Correct |
71 ms |
36188 KB |
Output is correct |
45 |
Correct |
28 ms |
36300 KB |
Output is correct |
46 |
Correct |
29 ms |
36252 KB |
Output is correct |
47 |
Runtime error |
45 ms |
72780 KB |
Execution killed with signal 11 |
48 |
Halted |
0 ms |
0 KB |
- |