/*
* author: NeroZein
* created: 04.02.2023 22:58:06
*/
#include <bits/stdc++.h>
using namespace std;
#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif
const int N = 2003;
int n, m;
int b[N];
int p[N];
int g[N][N];
inline void minSelf(int& x, int y) {
x = min(x, y);
}
int ans;
int cost[N];
inline void dij() {
priority_queue<pair<int,int>, vector<pair<int,int>>, greater<pair<int,int>>> pq;
memset(cost, 0x3f3f3f3f, sizeof cost);
cost[b[0]] = 0;
pq.emplace(0, b[0]);
while (!pq.empty()) {
auto src = pq.top();
pq.pop();
if (src.second == b[1]) {
cout << src.first << '\n';
exit(0);
}
if (src.first != cost[src.second]) {
continue;
}
for (int i = 0; i < n; ++i) {
if (src.first + g[src.second][i] < cost[i]) {
cost[i] = src.first + g[src.second][i];
pq.emplace(cost[i], i);
}
}
}
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
memset(g, 0x3f3f3f3f, sizeof g);
for (int i = 0; i < m; ++i) {
cin >> b[i] >> p[i];
for (int j = 1; j < n; ++j) {
int l = b[i] - j * p[i];
int r = b[i] + j * p[i];
if (r < n) {
minSelf(g[b[i]][r], j);
}
if (l >= 0) {
minSelf(g[b[i]][l], j);
}
}
}
ans = INT_MAX;
dij();
cout << -1 << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
15956 KB |
Output is correct |
2 |
Correct |
7 ms |
15956 KB |
Output is correct |
3 |
Correct |
7 ms |
16032 KB |
Output is correct |
4 |
Correct |
6 ms |
15956 KB |
Output is correct |
5 |
Correct |
7 ms |
15956 KB |
Output is correct |
6 |
Correct |
6 ms |
15956 KB |
Output is correct |
7 |
Correct |
6 ms |
15920 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
16028 KB |
Output is correct |
2 |
Correct |
7 ms |
16008 KB |
Output is correct |
3 |
Correct |
6 ms |
15956 KB |
Output is correct |
4 |
Correct |
7 ms |
15956 KB |
Output is correct |
5 |
Correct |
6 ms |
15956 KB |
Output is correct |
6 |
Correct |
6 ms |
16012 KB |
Output is correct |
7 |
Correct |
7 ms |
15956 KB |
Output is correct |
8 |
Correct |
6 ms |
16012 KB |
Output is correct |
9 |
Correct |
6 ms |
16012 KB |
Output is correct |
10 |
Correct |
8 ms |
15956 KB |
Output is correct |
11 |
Correct |
7 ms |
15928 KB |
Output is correct |
12 |
Correct |
7 ms |
15956 KB |
Output is correct |
13 |
Correct |
7 ms |
15956 KB |
Output is correct |
14 |
Correct |
7 ms |
15956 KB |
Output is correct |
15 |
Correct |
8 ms |
15964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
15972 KB |
Output is correct |
2 |
Correct |
6 ms |
15956 KB |
Output is correct |
3 |
Correct |
6 ms |
15956 KB |
Output is correct |
4 |
Correct |
7 ms |
15956 KB |
Output is correct |
5 |
Correct |
9 ms |
15956 KB |
Output is correct |
6 |
Correct |
7 ms |
15956 KB |
Output is correct |
7 |
Correct |
8 ms |
15956 KB |
Output is correct |
8 |
Correct |
7 ms |
15956 KB |
Output is correct |
9 |
Correct |
7 ms |
15956 KB |
Output is correct |
10 |
Correct |
6 ms |
15956 KB |
Output is correct |
11 |
Correct |
7 ms |
15956 KB |
Output is correct |
12 |
Correct |
7 ms |
15992 KB |
Output is correct |
13 |
Correct |
7 ms |
15956 KB |
Output is correct |
14 |
Correct |
7 ms |
15968 KB |
Output is correct |
15 |
Correct |
7 ms |
16056 KB |
Output is correct |
16 |
Correct |
6 ms |
15956 KB |
Output is correct |
17 |
Correct |
9 ms |
15956 KB |
Output is correct |
18 |
Correct |
9 ms |
16032 KB |
Output is correct |
19 |
Correct |
9 ms |
15956 KB |
Output is correct |
20 |
Correct |
16 ms |
16084 KB |
Output is correct |
21 |
Correct |
8 ms |
15956 KB |
Output is correct |
22 |
Correct |
9 ms |
15956 KB |
Output is correct |
23 |
Correct |
14 ms |
16032 KB |
Output is correct |
24 |
Correct |
16 ms |
15956 KB |
Output is correct |
25 |
Correct |
13 ms |
15956 KB |
Output is correct |
26 |
Correct |
18 ms |
15956 KB |
Output is correct |
27 |
Correct |
16 ms |
16064 KB |
Output is correct |
28 |
Correct |
15 ms |
16052 KB |
Output is correct |
29 |
Correct |
12 ms |
16104 KB |
Output is correct |
30 |
Correct |
11 ms |
16096 KB |
Output is correct |
31 |
Correct |
12 ms |
16100 KB |
Output is correct |
32 |
Correct |
12 ms |
16116 KB |
Output is correct |
33 |
Correct |
18 ms |
16048 KB |
Output is correct |
34 |
Correct |
17 ms |
16084 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
15956 KB |
Output is correct |
2 |
Correct |
6 ms |
15956 KB |
Output is correct |
3 |
Correct |
6 ms |
15956 KB |
Output is correct |
4 |
Correct |
6 ms |
15956 KB |
Output is correct |
5 |
Correct |
7 ms |
15952 KB |
Output is correct |
6 |
Correct |
6 ms |
15956 KB |
Output is correct |
7 |
Correct |
7 ms |
15956 KB |
Output is correct |
8 |
Correct |
7 ms |
15956 KB |
Output is correct |
9 |
Correct |
7 ms |
15956 KB |
Output is correct |
10 |
Correct |
6 ms |
15956 KB |
Output is correct |
11 |
Correct |
8 ms |
15956 KB |
Output is correct |
12 |
Correct |
7 ms |
15956 KB |
Output is correct |
13 |
Correct |
7 ms |
15956 KB |
Output is correct |
14 |
Correct |
7 ms |
15956 KB |
Output is correct |
15 |
Correct |
8 ms |
15956 KB |
Output is correct |
16 |
Correct |
7 ms |
15956 KB |
Output is correct |
17 |
Correct |
9 ms |
16084 KB |
Output is correct |
18 |
Correct |
9 ms |
15956 KB |
Output is correct |
19 |
Correct |
8 ms |
16032 KB |
Output is correct |
20 |
Correct |
17 ms |
15956 KB |
Output is correct |
21 |
Correct |
10 ms |
15956 KB |
Output is correct |
22 |
Correct |
10 ms |
15956 KB |
Output is correct |
23 |
Correct |
11 ms |
15956 KB |
Output is correct |
24 |
Correct |
16 ms |
15956 KB |
Output is correct |
25 |
Correct |
13 ms |
16044 KB |
Output is correct |
26 |
Correct |
15 ms |
15956 KB |
Output is correct |
27 |
Correct |
16 ms |
15964 KB |
Output is correct |
28 |
Correct |
15 ms |
16044 KB |
Output is correct |
29 |
Correct |
13 ms |
16160 KB |
Output is correct |
30 |
Correct |
11 ms |
16084 KB |
Output is correct |
31 |
Correct |
12 ms |
16084 KB |
Output is correct |
32 |
Correct |
12 ms |
16028 KB |
Output is correct |
33 |
Correct |
16 ms |
16172 KB |
Output is correct |
34 |
Correct |
16 ms |
16084 KB |
Output is correct |
35 |
Incorrect |
11 ms |
15984 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
16012 KB |
Output is correct |
2 |
Correct |
6 ms |
15988 KB |
Output is correct |
3 |
Correct |
6 ms |
15956 KB |
Output is correct |
4 |
Correct |
7 ms |
15956 KB |
Output is correct |
5 |
Correct |
7 ms |
16008 KB |
Output is correct |
6 |
Correct |
6 ms |
15956 KB |
Output is correct |
7 |
Correct |
6 ms |
15956 KB |
Output is correct |
8 |
Correct |
8 ms |
15956 KB |
Output is correct |
9 |
Correct |
6 ms |
15956 KB |
Output is correct |
10 |
Correct |
6 ms |
15956 KB |
Output is correct |
11 |
Correct |
8 ms |
16016 KB |
Output is correct |
12 |
Correct |
9 ms |
15956 KB |
Output is correct |
13 |
Correct |
7 ms |
15992 KB |
Output is correct |
14 |
Correct |
8 ms |
15956 KB |
Output is correct |
15 |
Correct |
10 ms |
15956 KB |
Output is correct |
16 |
Correct |
6 ms |
15956 KB |
Output is correct |
17 |
Correct |
9 ms |
15956 KB |
Output is correct |
18 |
Correct |
9 ms |
15956 KB |
Output is correct |
19 |
Correct |
8 ms |
15956 KB |
Output is correct |
20 |
Correct |
17 ms |
16040 KB |
Output is correct |
21 |
Correct |
7 ms |
15956 KB |
Output is correct |
22 |
Correct |
8 ms |
15956 KB |
Output is correct |
23 |
Correct |
11 ms |
15972 KB |
Output is correct |
24 |
Correct |
17 ms |
15956 KB |
Output is correct |
25 |
Correct |
14 ms |
16044 KB |
Output is correct |
26 |
Correct |
15 ms |
15956 KB |
Output is correct |
27 |
Correct |
15 ms |
15944 KB |
Output is correct |
28 |
Correct |
16 ms |
16040 KB |
Output is correct |
29 |
Correct |
13 ms |
16116 KB |
Output is correct |
30 |
Correct |
11 ms |
16084 KB |
Output is correct |
31 |
Correct |
12 ms |
16084 KB |
Output is correct |
32 |
Correct |
11 ms |
16084 KB |
Output is correct |
33 |
Correct |
16 ms |
16084 KB |
Output is correct |
34 |
Correct |
18 ms |
16168 KB |
Output is correct |
35 |
Incorrect |
10 ms |
15956 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |