#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
void solve(){
int n, m;
cin >> n >> m;
vector<pair<int,int>>monsters(m);
vector<set<int>>pos(n);
for (int i = 0; i < m; i++){
int b, p;
cin >> b >> p;
pos[b].insert(p);
monsters[i] = {b,p};
}
vector<long long>dp(n, (long long)1e18);
dp[monsters[0].first] = 0;
priority_queue<pair<long long,int>>pq;
pq.push({0,monsters[0].first});
while(!pq.empty()){
long long dst = -pq.top().first;
int b = pq.top().second;
pq.pop();
//node + pow * x = mn
if (dp[b] != dst)continue;
if (b == monsters[1].first){
cout << dst << endl;
return ;
}
if (pos[b].empty())continue;
int pmin = *pos[b].begin();
for (int i = 1; i <= n / pmin; i++){
for (auto p : pos[b]){
bool ok = 0;
int right = b + i * p;
int left = b - i * p;
if (left >= 0){
ok = 1;
if (dp[left] > dst + i){
dp[left] = dst + i;
pq.push({-dst-i,left});
}
}
if (right <= n - 1){
ok = 1;
if (dp[right] > dst + i){
dp[right] = dst + i;
pq.push({-dst-i,right});
}
}
if (!ok)break;
}
}
}
cout << - 1 << endl;
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
solve();
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
468 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
24 ms |
604 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
468 KB |
Output is correct |
| 24 |
Correct |
1 ms |
596 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
468 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
2 ms |
468 KB |
Output is correct |
| 29 |
Correct |
2 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
1 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
2 ms |
724 KB |
Output is correct |
| 34 |
Correct |
2 ms |
724 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
356 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
24 ms |
608 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
468 KB |
Output is correct |
| 24 |
Correct |
2 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
468 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
1 ms |
468 KB |
Output is correct |
| 29 |
Correct |
2 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
2 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
2 ms |
724 KB |
Output is correct |
| 34 |
Correct |
2 ms |
724 KB |
Output is correct |
| 35 |
Correct |
8 ms |
1876 KB |
Output is correct |
| 36 |
Correct |
1 ms |
584 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1620 KB |
Output is correct |
| 38 |
Correct |
11 ms |
2284 KB |
Output is correct |
| 39 |
Correct |
8 ms |
2132 KB |
Output is correct |
| 40 |
Correct |
8 ms |
2260 KB |
Output is correct |
| 41 |
Correct |
9 ms |
2276 KB |
Output is correct |
| 42 |
Correct |
3 ms |
596 KB |
Output is correct |
| 43 |
Correct |
4 ms |
676 KB |
Output is correct |
| 44 |
Correct |
27 ms |
832 KB |
Output is correct |
| 45 |
Correct |
11 ms |
2132 KB |
Output is correct |
| 46 |
Correct |
11 ms |
2076 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
468 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
26 ms |
596 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
468 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
468 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
1 ms |
468 KB |
Output is correct |
| 29 |
Correct |
1 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
1 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
2 ms |
724 KB |
Output is correct |
| 34 |
Correct |
2 ms |
724 KB |
Output is correct |
| 35 |
Correct |
8 ms |
1904 KB |
Output is correct |
| 36 |
Correct |
1 ms |
596 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1620 KB |
Output is correct |
| 38 |
Correct |
10 ms |
2208 KB |
Output is correct |
| 39 |
Correct |
8 ms |
2132 KB |
Output is correct |
| 40 |
Correct |
8 ms |
2260 KB |
Output is correct |
| 41 |
Correct |
9 ms |
2260 KB |
Output is correct |
| 42 |
Correct |
3 ms |
596 KB |
Output is correct |
| 43 |
Correct |
4 ms |
724 KB |
Output is correct |
| 44 |
Correct |
27 ms |
788 KB |
Output is correct |
| 45 |
Correct |
12 ms |
2132 KB |
Output is correct |
| 46 |
Correct |
12 ms |
2132 KB |
Output is correct |
| 47 |
Correct |
11 ms |
3404 KB |
Output is correct |
| 48 |
Correct |
5 ms |
2772 KB |
Output is correct |
| 49 |
Correct |
5 ms |
2772 KB |
Output is correct |
| 50 |
Correct |
4 ms |
2644 KB |
Output is correct |
| 51 |
Correct |
14 ms |
5704 KB |
Output is correct |
| 52 |
Correct |
16 ms |
4684 KB |
Output is correct |
| 53 |
Correct |
9 ms |
3924 KB |
Output is correct |
| 54 |
Correct |
2 ms |
2264 KB |
Output is correct |
| 55 |
Correct |
3 ms |
2264 KB |
Output is correct |
| 56 |
Execution timed out |
1096 ms |
4176 KB |
Time limit exceeded |
| 57 |
Halted |
0 ms |
0 KB |
- |
