#include <iostream>
#include <bits/stdc++.h>
using namespace std;
//typedef int64_t int;
//#define mp make_pairr
#define pb push_back
/*#define a first
#define b second*/
#define endl "\n"
int dis[2001][2001];
int b[2001];
int p[2001];
struct pairr{
int a;
int b;
};
vector<pairr> adj[2001][2001];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n,m;
cin>>n>>m;
//map<pairr<int,int>,int> aa;
for(int i=0;i<m;i++){
cin>>b[i]>>p[i];
for(int j=b[i]-p[i];j>=0;j=j-p[i]){
pairr ac;
ac.a=j;
ac.b=p[i];
adj[j+p[i]][p[i]].pb(ac);
ac.b=2000;
adj[j+p[i]][p[i]].pb(ac);
}
for(int j=b[i]+p[i];j<n;j=j+p[i]){
pairr ac;
ac.a=j;
ac.b=p[i];
adj[j-p[i]][p[i]].pb(ac);
ac.b=2000;
adj[j-p[i]][p[i]].pb(ac);
}
pairr ac;
ac.a=b[i];
ac.b=p[i];
adj[b[i]][2000].pb(ac);
}
memset(dis,-1,sizeof(dis));
dis[b[0]][2000]=0;
dis[b[0]][p[0]]=0;
deque<pairr> aaa;
pairr ac;
ac.a=b[0];
ac.b=p[0];
aaa.push_back(ac);
ac.b=2000;
aaa.push_back(ac);
while(!aaa.empty()){
pairr x;
x=aaa.front();
// cout<<x.a<<" "<<x.b<<" "<<dis[x.a][x.b]<<endl;
aaa.pop_front();
int co=1;
if(x.b==2000){
co=0;
}
for(auto nn:adj[x.a][x.b]){
if(dis[nn.a][nn.b]==-1){
dis[nn.a][nn.b]=dis[x.a][x.b]+co;
if(co==0){
aaa.push_front(nn);
}
else{
aaa.push_back(nn);
}
}
}
}
if(b[0]==b[1]){
cout<<0<<endl;
return 0;
}
cout<<dis[b[1]][2000]<<endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
77 ms |
110072 KB |
Output is correct |
2 |
Correct |
76 ms |
110200 KB |
Output is correct |
3 |
Correct |
75 ms |
110076 KB |
Output is correct |
4 |
Correct |
77 ms |
110072 KB |
Output is correct |
5 |
Correct |
75 ms |
110072 KB |
Output is correct |
6 |
Correct |
76 ms |
110072 KB |
Output is correct |
7 |
Correct |
77 ms |
110072 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
79 ms |
110072 KB |
Output is correct |
2 |
Correct |
79 ms |
110072 KB |
Output is correct |
3 |
Correct |
79 ms |
110072 KB |
Output is correct |
4 |
Correct |
85 ms |
110104 KB |
Output is correct |
5 |
Correct |
79 ms |
110176 KB |
Output is correct |
6 |
Correct |
79 ms |
110072 KB |
Output is correct |
7 |
Correct |
81 ms |
110072 KB |
Output is correct |
8 |
Correct |
75 ms |
110072 KB |
Output is correct |
9 |
Correct |
78 ms |
110028 KB |
Output is correct |
10 |
Correct |
82 ms |
110072 KB |
Output is correct |
11 |
Correct |
81 ms |
110328 KB |
Output is correct |
12 |
Correct |
87 ms |
113400 KB |
Output is correct |
13 |
Correct |
80 ms |
113528 KB |
Output is correct |
14 |
Correct |
75 ms |
110200 KB |
Output is correct |
15 |
Correct |
80 ms |
110200 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
73 ms |
110072 KB |
Output is correct |
2 |
Correct |
80 ms |
110072 KB |
Output is correct |
3 |
Correct |
78 ms |
110072 KB |
Output is correct |
4 |
Correct |
76 ms |
110080 KB |
Output is correct |
5 |
Correct |
77 ms |
110072 KB |
Output is correct |
6 |
Correct |
77 ms |
110072 KB |
Output is correct |
7 |
Correct |
78 ms |
110072 KB |
Output is correct |
8 |
Correct |
80 ms |
109944 KB |
Output is correct |
9 |
Correct |
78 ms |
110072 KB |
Output is correct |
10 |
Correct |
79 ms |
110200 KB |
Output is correct |
11 |
Correct |
79 ms |
110328 KB |
Output is correct |
12 |
Correct |
82 ms |
113400 KB |
Output is correct |
13 |
Correct |
88 ms |
113528 KB |
Output is correct |
14 |
Correct |
79 ms |
110200 KB |
Output is correct |
15 |
Correct |
81 ms |
110200 KB |
Output is correct |
16 |
Correct |
80 ms |
110200 KB |
Output is correct |
17 |
Correct |
85 ms |
110712 KB |
Output is correct |
18 |
Correct |
83 ms |
110200 KB |
Output is correct |
19 |
Correct |
79 ms |
110200 KB |
Output is correct |
20 |
Correct |
400 ms |
178808 KB |
Output is correct |
21 |
Correct |
76 ms |
110072 KB |
Output is correct |
22 |
Correct |
78 ms |
110200 KB |
Output is correct |
23 |
Correct |
82 ms |
110328 KB |
Output is correct |
24 |
Correct |
86 ms |
110456 KB |
Output is correct |
25 |
Correct |
80 ms |
110328 KB |
Output is correct |
26 |
Correct |
392 ms |
174820 KB |
Output is correct |
27 |
Correct |
366 ms |
173048 KB |
Output is correct |
28 |
Correct |
87 ms |
110972 KB |
Output is correct |
29 |
Correct |
103 ms |
111992 KB |
Output is correct |
30 |
Correct |
82 ms |
110584 KB |
Output is correct |
31 |
Correct |
90 ms |
111152 KB |
Output is correct |
32 |
Correct |
96 ms |
110872 KB |
Output is correct |
33 |
Correct |
124 ms |
113784 KB |
Output is correct |
34 |
Correct |
126 ms |
113784 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
77 ms |
110072 KB |
Output is correct |
2 |
Correct |
82 ms |
110000 KB |
Output is correct |
3 |
Correct |
79 ms |
110072 KB |
Output is correct |
4 |
Correct |
76 ms |
109984 KB |
Output is correct |
5 |
Correct |
76 ms |
110072 KB |
Output is correct |
6 |
Correct |
75 ms |
109992 KB |
Output is correct |
7 |
Correct |
74 ms |
110072 KB |
Output is correct |
8 |
Correct |
77 ms |
110200 KB |
Output is correct |
9 |
Correct |
75 ms |
110072 KB |
Output is correct |
10 |
Correct |
100 ms |
110072 KB |
Output is correct |
11 |
Correct |
77 ms |
110280 KB |
Output is correct |
12 |
Correct |
84 ms |
113400 KB |
Output is correct |
13 |
Correct |
83 ms |
113528 KB |
Output is correct |
14 |
Correct |
80 ms |
110204 KB |
Output is correct |
15 |
Correct |
77 ms |
110200 KB |
Output is correct |
16 |
Correct |
78 ms |
110200 KB |
Output is correct |
17 |
Correct |
85 ms |
110712 KB |
Output is correct |
18 |
Correct |
78 ms |
110200 KB |
Output is correct |
19 |
Correct |
80 ms |
110200 KB |
Output is correct |
20 |
Correct |
406 ms |
178808 KB |
Output is correct |
21 |
Correct |
77 ms |
110072 KB |
Output is correct |
22 |
Correct |
77 ms |
110200 KB |
Output is correct |
23 |
Correct |
78 ms |
110200 KB |
Output is correct |
24 |
Correct |
87 ms |
110436 KB |
Output is correct |
25 |
Correct |
80 ms |
110328 KB |
Output is correct |
26 |
Correct |
378 ms |
174584 KB |
Output is correct |
27 |
Correct |
364 ms |
173048 KB |
Output is correct |
28 |
Correct |
85 ms |
110716 KB |
Output is correct |
29 |
Correct |
99 ms |
111992 KB |
Output is correct |
30 |
Correct |
81 ms |
110588 KB |
Output is correct |
31 |
Correct |
96 ms |
111096 KB |
Output is correct |
32 |
Correct |
89 ms |
110876 KB |
Output is correct |
33 |
Correct |
124 ms |
113876 KB |
Output is correct |
34 |
Correct |
123 ms |
113876 KB |
Output is correct |
35 |
Incorrect |
133 ms |
114040 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
76 ms |
110072 KB |
Output is correct |
2 |
Correct |
77 ms |
110040 KB |
Output is correct |
3 |
Correct |
77 ms |
110072 KB |
Output is correct |
4 |
Correct |
75 ms |
110072 KB |
Output is correct |
5 |
Correct |
78 ms |
110016 KB |
Output is correct |
6 |
Correct |
75 ms |
110072 KB |
Output is correct |
7 |
Correct |
76 ms |
110200 KB |
Output is correct |
8 |
Correct |
75 ms |
110072 KB |
Output is correct |
9 |
Correct |
77 ms |
110072 KB |
Output is correct |
10 |
Correct |
77 ms |
110152 KB |
Output is correct |
11 |
Correct |
77 ms |
110328 KB |
Output is correct |
12 |
Correct |
83 ms |
113400 KB |
Output is correct |
13 |
Correct |
82 ms |
113528 KB |
Output is correct |
14 |
Correct |
77 ms |
110200 KB |
Output is correct |
15 |
Correct |
78 ms |
110200 KB |
Output is correct |
16 |
Correct |
76 ms |
110200 KB |
Output is correct |
17 |
Correct |
84 ms |
110712 KB |
Output is correct |
18 |
Correct |
87 ms |
110328 KB |
Output is correct |
19 |
Correct |
75 ms |
110200 KB |
Output is correct |
20 |
Correct |
396 ms |
178808 KB |
Output is correct |
21 |
Correct |
78 ms |
110200 KB |
Output is correct |
22 |
Correct |
77 ms |
110264 KB |
Output is correct |
23 |
Correct |
83 ms |
110200 KB |
Output is correct |
24 |
Correct |
83 ms |
110456 KB |
Output is correct |
25 |
Correct |
86 ms |
110328 KB |
Output is correct |
26 |
Correct |
390 ms |
174596 KB |
Output is correct |
27 |
Correct |
363 ms |
173048 KB |
Output is correct |
28 |
Correct |
85 ms |
110712 KB |
Output is correct |
29 |
Correct |
100 ms |
111992 KB |
Output is correct |
30 |
Correct |
84 ms |
110712 KB |
Output is correct |
31 |
Correct |
89 ms |
111096 KB |
Output is correct |
32 |
Correct |
84 ms |
110840 KB |
Output is correct |
33 |
Correct |
124 ms |
113784 KB |
Output is correct |
34 |
Correct |
126 ms |
113784 KB |
Output is correct |
35 |
Incorrect |
132 ms |
114040 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |