#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
struct edge
{
int x,d;
edge() {}
edge(int _x,int _d)
{
x=_x;
d=_d;
}
bool operator<(const edge&e)const
{
return e.d<d;
}
};
int n,m;
vector<edge> v[32001];
int ver[30001][201];
int s=200,num;
void read()
{
cin>>n>>m;
num=n+m;
for(int i=0; i<n; i++)
{
for(int j=1;j<=s;j++)
{
v[num].push_back({m+i,0});
if(i>=j)
{
v[num].push_back({ver[i-j][j],1});
v[ver[i-j][j]].push_back({num,1});
}
ver[i][j]=num++;
}
}
for(int i=0; i<m; i++)
{
int x,y;
cin>>x>>y;
if(y>s)
{
for(int j=x; j<n; j+=y)
{
//cout<<i<<" "<<j+m<<endl;
v[i].push_back({j+m,(j-x)/y});
}
for(int j=x-y; j>=0; j-=y)
{
//cout<<i<<" "<<j+m<<endl;
v[i].push_back({j+m,(x-j)/y});
}
}
else
{
v[i].push_back({ver[x][y],0});
}
//cout<<x+m<<" "<<i<<endl;
v[x+m].push_back({i,0});
}
}
int d[7000000];
priority_queue<edge> q;
void dijkstra()
{
for(int i=0; i<=num; i++)
d[i]=1e9;
d[0]=0;
q.push({0,0});
while(q.size())
{
edge e=q.top();
//cout<<e.x<<endl;
q.pop();
if(d[e.x]>=e.d)
{
for(int i=0; i<v[e.x].size(); i++)
{
edge nb=v[e.x][i];
if(nb.d+e.d<d[nb.x])
{
d[nb.x]=nb.d+e.d;
q.push({nb.x,d[nb.x]});
}
}
}
}
}
int main()
{
read();
dijkstra();
if(d[1]==1e9)d[1]=-1;
cout<<d[1]<<endl;
return 0;
}
Compilation message
skyscraper.cpp: In function 'void dijkstra()':
skyscraper.cpp:89:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
89 | for(int i=0; i<v[e.x].size(); i++)
| ~^~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4688 KB |
Output is correct |
2 |
Correct |
1 ms |
4688 KB |
Output is correct |
3 |
Correct |
1 ms |
4688 KB |
Output is correct |
4 |
Correct |
1 ms |
4688 KB |
Output is correct |
5 |
Correct |
2 ms |
4688 KB |
Output is correct |
6 |
Correct |
1 ms |
4688 KB |
Output is correct |
7 |
Correct |
1 ms |
4688 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4688 KB |
Output is correct |
2 |
Correct |
2 ms |
4688 KB |
Output is correct |
3 |
Correct |
1 ms |
4688 KB |
Output is correct |
4 |
Correct |
2 ms |
4688 KB |
Output is correct |
5 |
Correct |
1 ms |
4688 KB |
Output is correct |
6 |
Correct |
1 ms |
4688 KB |
Output is correct |
7 |
Correct |
2 ms |
4688 KB |
Output is correct |
8 |
Correct |
2 ms |
5072 KB |
Output is correct |
9 |
Correct |
3 ms |
5200 KB |
Output is correct |
10 |
Correct |
3 ms |
5456 KB |
Output is correct |
11 |
Correct |
4 ms |
5688 KB |
Output is correct |
12 |
Correct |
3 ms |
5456 KB |
Output is correct |
13 |
Correct |
3 ms |
5684 KB |
Output is correct |
14 |
Correct |
4 ms |
5624 KB |
Output is correct |
15 |
Correct |
4 ms |
5456 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4856 KB |
Output is correct |
2 |
Correct |
2 ms |
4856 KB |
Output is correct |
3 |
Correct |
2 ms |
4688 KB |
Output is correct |
4 |
Correct |
1 ms |
4688 KB |
Output is correct |
5 |
Correct |
2 ms |
4688 KB |
Output is correct |
6 |
Correct |
2 ms |
4688 KB |
Output is correct |
7 |
Correct |
1 ms |
4688 KB |
Output is correct |
8 |
Correct |
2 ms |
4944 KB |
Output is correct |
9 |
Correct |
2 ms |
5200 KB |
Output is correct |
10 |
Correct |
3 ms |
5456 KB |
Output is correct |
11 |
Correct |
4 ms |
5456 KB |
Output is correct |
12 |
Correct |
3 ms |
5624 KB |
Output is correct |
13 |
Correct |
4 ms |
5456 KB |
Output is correct |
14 |
Correct |
3 ms |
5456 KB |
Output is correct |
15 |
Correct |
4 ms |
5456 KB |
Output is correct |
16 |
Runtime error |
15 ms |
11580 KB |
Execution killed with signal 6 |
17 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4688 KB |
Output is correct |
2 |
Correct |
2 ms |
4688 KB |
Output is correct |
3 |
Correct |
2 ms |
4688 KB |
Output is correct |
4 |
Correct |
1 ms |
4688 KB |
Output is correct |
5 |
Correct |
2 ms |
4688 KB |
Output is correct |
6 |
Correct |
2 ms |
4688 KB |
Output is correct |
7 |
Correct |
1 ms |
4688 KB |
Output is correct |
8 |
Correct |
2 ms |
4944 KB |
Output is correct |
9 |
Correct |
2 ms |
5368 KB |
Output is correct |
10 |
Correct |
3 ms |
5584 KB |
Output is correct |
11 |
Correct |
4 ms |
5624 KB |
Output is correct |
12 |
Correct |
3 ms |
5456 KB |
Output is correct |
13 |
Correct |
4 ms |
5456 KB |
Output is correct |
14 |
Correct |
4 ms |
5456 KB |
Output is correct |
15 |
Correct |
4 ms |
5548 KB |
Output is correct |
16 |
Runtime error |
14 ms |
11600 KB |
Execution killed with signal 6 |
17 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4688 KB |
Output is correct |
2 |
Correct |
1 ms |
4688 KB |
Output is correct |
3 |
Correct |
2 ms |
4688 KB |
Output is correct |
4 |
Correct |
1 ms |
4688 KB |
Output is correct |
5 |
Correct |
1 ms |
4688 KB |
Output is correct |
6 |
Correct |
1 ms |
4688 KB |
Output is correct |
7 |
Correct |
2 ms |
4688 KB |
Output is correct |
8 |
Correct |
2 ms |
5112 KB |
Output is correct |
9 |
Correct |
2 ms |
5200 KB |
Output is correct |
10 |
Correct |
3 ms |
5456 KB |
Output is correct |
11 |
Correct |
4 ms |
5456 KB |
Output is correct |
12 |
Correct |
4 ms |
5456 KB |
Output is correct |
13 |
Correct |
3 ms |
5456 KB |
Output is correct |
14 |
Correct |
4 ms |
5456 KB |
Output is correct |
15 |
Correct |
4 ms |
5456 KB |
Output is correct |
16 |
Runtime error |
14 ms |
11600 KB |
Execution killed with signal 6 |
17 |
Halted |
0 ms |
0 KB |
- |