#include<bits/stdc++.h>
using namespace std;
#ifdef sus
const int N=100, S=3;
#else
const int N=3e4+10, S=100;
#endif
int n, m, b[N], p[N], heavy[N];
int f[N][S+10];
vector<pair<pair<int, int>, int>> g[N][S+10];
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
for (int i=1; i<=m; ++i) cin >> b[i] >> p[i], heavy[i]=p[i]>=S, ++b[i];
for (int i=1; i<=m; ++i) if (heavy[i]){
for (int l=b[i]-p[i], r=b[i]+p[i], cnt=1; l>=1 || r<=n; l-=p[i], r+=p[i], ++cnt){
if (l>=1) g[b[i]][S].push_back({{l, S}, cnt});
if (r<=n) g[b[i]][S].push_back({{r, S}, cnt});
}
for (int j=1; j<S; ++j) g[b[i]][j].push_back({{b[i], S}, 0});
}
for (int i=1; i<=m; ++i) if (!heavy[i]){
for (int j=1; j<=S; ++j) if (j!=p[i]) g[b[i]][j].push_back({{b[i], p[i]}, 0});
}
for (int i=1; i<=n; ++i) for (int j=1; j<S; ++j){
if (i-j>=1) g[i][j].push_back({{i-j, j}, 1});
if (i+j<=n) g[i][j].push_back({{i+j, j}, 1});
}
priority_queue<pair<int, pair<int, int>>, vector<pair<int, pair<int, int>>>, greater<pair<int, pair<int, int>>>> pq;
memset(f, 0x3f, sizeof f);
pq.push({f[b[1]][min(S, p[1])]=0, {b[1], min(S, p[1])}});
while (pq.size()){
auto u=pq.top().second;
int d=pq.top().first;
pq.pop();
if (f[u.first][u.second]!=d) continue;
for (auto &e:g[u.first][u.second]){
auto v=e.first; int w=e.second;
if (f[v.first][v.second]>d+w) pq.emplace(f[v.first][v.second]=d+w, v);
}
}
int ans=*min_element(f[b[2]]+1, f[b[2]]+S+1);
if (ans>1e9) ans=-1;
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
54 ms |
90704 KB |
Output is correct |
2 |
Correct |
22 ms |
90812 KB |
Output is correct |
3 |
Correct |
21 ms |
90968 KB |
Output is correct |
4 |
Correct |
20 ms |
90716 KB |
Output is correct |
5 |
Correct |
20 ms |
90716 KB |
Output is correct |
6 |
Correct |
20 ms |
90844 KB |
Output is correct |
7 |
Correct |
22 ms |
90716 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
24 ms |
90820 KB |
Output is correct |
2 |
Correct |
20 ms |
90752 KB |
Output is correct |
3 |
Correct |
20 ms |
90920 KB |
Output is correct |
4 |
Correct |
20 ms |
90716 KB |
Output is correct |
5 |
Correct |
20 ms |
90936 KB |
Output is correct |
6 |
Correct |
20 ms |
90712 KB |
Output is correct |
7 |
Correct |
20 ms |
90716 KB |
Output is correct |
8 |
Correct |
22 ms |
90972 KB |
Output is correct |
9 |
Correct |
22 ms |
90972 KB |
Output is correct |
10 |
Correct |
23 ms |
91740 KB |
Output is correct |
11 |
Correct |
27 ms |
94556 KB |
Output is correct |
12 |
Correct |
26 ms |
93600 KB |
Output is correct |
13 |
Correct |
24 ms |
93776 KB |
Output is correct |
14 |
Correct |
27 ms |
94292 KB |
Output is correct |
15 |
Correct |
28 ms |
94300 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
90920 KB |
Output is correct |
2 |
Correct |
20 ms |
90712 KB |
Output is correct |
3 |
Correct |
20 ms |
90716 KB |
Output is correct |
4 |
Correct |
20 ms |
90940 KB |
Output is correct |
5 |
Correct |
21 ms |
90860 KB |
Output is correct |
6 |
Correct |
19 ms |
90716 KB |
Output is correct |
7 |
Correct |
20 ms |
90840 KB |
Output is correct |
8 |
Correct |
20 ms |
90972 KB |
Output is correct |
9 |
Correct |
22 ms |
90972 KB |
Output is correct |
10 |
Correct |
23 ms |
91740 KB |
Output is correct |
11 |
Correct |
27 ms |
94556 KB |
Output is correct |
12 |
Correct |
25 ms |
93392 KB |
Output is correct |
13 |
Correct |
27 ms |
93784 KB |
Output is correct |
14 |
Correct |
26 ms |
94300 KB |
Output is correct |
15 |
Correct |
26 ms |
94300 KB |
Output is correct |
16 |
Correct |
24 ms |
93020 KB |
Output is correct |
17 |
Correct |
33 ms |
96832 KB |
Output is correct |
18 |
Correct |
36 ms |
98612 KB |
Output is correct |
19 |
Correct |
35 ms |
98412 KB |
Output is correct |
20 |
Correct |
47 ms |
102996 KB |
Output is correct |
21 |
Correct |
28 ms |
94296 KB |
Output is correct |
22 |
Correct |
34 ms |
98140 KB |
Output is correct |
23 |
Correct |
35 ms |
98232 KB |
Output is correct |
24 |
Correct |
42 ms |
101208 KB |
Output is correct |
25 |
Correct |
45 ms |
101712 KB |
Output is correct |
26 |
Correct |
37 ms |
99836 KB |
Output is correct |
27 |
Correct |
38 ms |
99620 KB |
Output is correct |
28 |
Correct |
50 ms |
103120 KB |
Output is correct |
29 |
Correct |
49 ms |
98252 KB |
Output is correct |
30 |
Correct |
37 ms |
97472 KB |
Output is correct |
31 |
Correct |
42 ms |
98132 KB |
Output is correct |
32 |
Correct |
45 ms |
97744 KB |
Output is correct |
33 |
Correct |
56 ms |
100228 KB |
Output is correct |
34 |
Correct |
58 ms |
100304 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
90716 KB |
Output is correct |
2 |
Correct |
20 ms |
90716 KB |
Output is correct |
3 |
Correct |
20 ms |
90712 KB |
Output is correct |
4 |
Correct |
20 ms |
90716 KB |
Output is correct |
5 |
Correct |
21 ms |
90972 KB |
Output is correct |
6 |
Correct |
22 ms |
90808 KB |
Output is correct |
7 |
Correct |
21 ms |
90972 KB |
Output is correct |
8 |
Correct |
20 ms |
90972 KB |
Output is correct |
9 |
Correct |
22 ms |
90972 KB |
Output is correct |
10 |
Correct |
22 ms |
91784 KB |
Output is correct |
11 |
Correct |
27 ms |
94492 KB |
Output is correct |
12 |
Correct |
24 ms |
93528 KB |
Output is correct |
13 |
Correct |
24 ms |
93784 KB |
Output is correct |
14 |
Correct |
27 ms |
94300 KB |
Output is correct |
15 |
Correct |
30 ms |
94420 KB |
Output is correct |
16 |
Correct |
27 ms |
92996 KB |
Output is correct |
17 |
Correct |
38 ms |
96592 KB |
Output is correct |
18 |
Correct |
34 ms |
98640 KB |
Output is correct |
19 |
Correct |
40 ms |
98576 KB |
Output is correct |
20 |
Correct |
48 ms |
103116 KB |
Output is correct |
21 |
Correct |
26 ms |
94332 KB |
Output is correct |
22 |
Correct |
36 ms |
98140 KB |
Output is correct |
23 |
Correct |
35 ms |
98140 KB |
Output is correct |
24 |
Correct |
42 ms |
101204 KB |
Output is correct |
25 |
Correct |
41 ms |
101724 KB |
Output is correct |
26 |
Correct |
37 ms |
99932 KB |
Output is correct |
27 |
Correct |
38 ms |
99672 KB |
Output is correct |
28 |
Correct |
54 ms |
103152 KB |
Output is correct |
29 |
Correct |
46 ms |
98068 KB |
Output is correct |
30 |
Correct |
36 ms |
97220 KB |
Output is correct |
31 |
Correct |
41 ms |
98140 KB |
Output is correct |
32 |
Correct |
42 ms |
97752 KB |
Output is correct |
33 |
Correct |
60 ms |
100316 KB |
Output is correct |
34 |
Correct |
59 ms |
100436 KB |
Output is correct |
35 |
Correct |
139 ms |
142676 KB |
Output is correct |
36 |
Correct |
47 ms |
103260 KB |
Output is correct |
37 |
Correct |
139 ms |
132688 KB |
Output is correct |
38 |
Correct |
169 ms |
153788 KB |
Output is correct |
39 |
Correct |
170 ms |
153424 KB |
Output is correct |
40 |
Correct |
166 ms |
153756 KB |
Output is correct |
41 |
Correct |
180 ms |
153680 KB |
Output is correct |
42 |
Correct |
86 ms |
133612 KB |
Output is correct |
43 |
Correct |
81 ms |
133496 KB |
Output is correct |
44 |
Correct |
90 ms |
137580 KB |
Output is correct |
45 |
Correct |
154 ms |
149484 KB |
Output is correct |
46 |
Correct |
145 ms |
149268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
90712 KB |
Output is correct |
2 |
Correct |
20 ms |
90716 KB |
Output is correct |
3 |
Correct |
21 ms |
90712 KB |
Output is correct |
4 |
Correct |
20 ms |
90716 KB |
Output is correct |
5 |
Correct |
20 ms |
90840 KB |
Output is correct |
6 |
Correct |
22 ms |
90712 KB |
Output is correct |
7 |
Correct |
21 ms |
90716 KB |
Output is correct |
8 |
Correct |
20 ms |
90972 KB |
Output is correct |
9 |
Correct |
20 ms |
90972 KB |
Output is correct |
10 |
Correct |
25 ms |
91740 KB |
Output is correct |
11 |
Correct |
27 ms |
94616 KB |
Output is correct |
12 |
Correct |
23 ms |
93528 KB |
Output is correct |
13 |
Correct |
24 ms |
93784 KB |
Output is correct |
14 |
Correct |
28 ms |
94372 KB |
Output is correct |
15 |
Correct |
30 ms |
94424 KB |
Output is correct |
16 |
Correct |
24 ms |
92756 KB |
Output is correct |
17 |
Correct |
35 ms |
96852 KB |
Output is correct |
18 |
Correct |
34 ms |
98680 KB |
Output is correct |
19 |
Correct |
34 ms |
98404 KB |
Output is correct |
20 |
Correct |
48 ms |
102992 KB |
Output is correct |
21 |
Correct |
27 ms |
94332 KB |
Output is correct |
22 |
Correct |
34 ms |
98144 KB |
Output is correct |
23 |
Correct |
35 ms |
98140 KB |
Output is correct |
24 |
Correct |
45 ms |
101208 KB |
Output is correct |
25 |
Correct |
42 ms |
101712 KB |
Output is correct |
26 |
Correct |
37 ms |
99928 KB |
Output is correct |
27 |
Correct |
39 ms |
99676 KB |
Output is correct |
28 |
Correct |
50 ms |
103044 KB |
Output is correct |
29 |
Correct |
51 ms |
98272 KB |
Output is correct |
30 |
Correct |
39 ms |
97360 KB |
Output is correct |
31 |
Correct |
41 ms |
98252 KB |
Output is correct |
32 |
Correct |
39 ms |
97812 KB |
Output is correct |
33 |
Correct |
58 ms |
100316 KB |
Output is correct |
34 |
Correct |
57 ms |
100308 KB |
Output is correct |
35 |
Correct |
143 ms |
142676 KB |
Output is correct |
36 |
Correct |
46 ms |
103256 KB |
Output is correct |
37 |
Correct |
143 ms |
132880 KB |
Output is correct |
38 |
Correct |
170 ms |
153680 KB |
Output is correct |
39 |
Correct |
173 ms |
153324 KB |
Output is correct |
40 |
Correct |
183 ms |
153684 KB |
Output is correct |
41 |
Correct |
200 ms |
153424 KB |
Output is correct |
42 |
Correct |
80 ms |
133536 KB |
Output is correct |
43 |
Correct |
82 ms |
133520 KB |
Output is correct |
44 |
Correct |
91 ms |
137572 KB |
Output is correct |
45 |
Correct |
145 ms |
149360 KB |
Output is correct |
46 |
Correct |
145 ms |
149336 KB |
Output is correct |
47 |
Correct |
402 ms |
187988 KB |
Output is correct |
48 |
Correct |
268 ms |
217308 KB |
Output is correct |
49 |
Correct |
272 ms |
221988 KB |
Output is correct |
50 |
Correct |
256 ms |
216700 KB |
Output is correct |
51 |
Correct |
432 ms |
257420 KB |
Output is correct |
52 |
Correct |
429 ms |
258004 KB |
Output is correct |
53 |
Correct |
365 ms |
254436 KB |
Output is correct |
54 |
Correct |
206 ms |
183896 KB |
Output is correct |
55 |
Correct |
210 ms |
183780 KB |
Output is correct |
56 |
Runtime error |
384 ms |
262144 KB |
Execution killed with signal 9 |
57 |
Halted |
0 ms |
0 KB |
- |