#include <stdio.h>
#include <algorithm>
#include <vector>
#include <queue>
#define INF 0x7fffffff
using namespace std;
typedef pair <int,int> ppair;
typedef pair <int,ppair> pppair;
priority_queue <pppair,vector<pppair>,greater<pppair> > Q;
int N, A[2223][2223], D[2223][2223];
void input(void)
{
int i, j;
scanf("%d",&N);
for(i=1 ; i<=N ; i++)
for(j=1 ; j<=N ; j++)
{
scanf("%d",&A[i][j]);
D[i][j]=INF;
}
}
void process(void)
{
int i, y, x, ty, tx;
D[1][1]=0;
Q.push(make_pair(0,make_pair(1,1)));
while(!Q.empty())
{
y=Q.top().second.first;
x=Q.top().second.second;
Q.pop();
ty=y;
tx=x+1;
if(ty>=1 && ty<=N && tx>=1 && tx<=N)
{
if(A[y][x]>A[ty][tx])
{
if(D[ty][tx]>D[y][x])
{
D[ty][tx]=D[y][x];
Q.push(make_pair(D[ty][tx],make_pair(ty,tx)));
}
}
else
if(D[ty][tx]>D[y][x]+A[ty][tx]-A[y][x]+1)
{
D[ty][tx]=D[y][x]+A[ty][tx]-A[y][x]+1;
Q.push(make_pair(D[ty][tx],make_pair(ty,tx)));
}
}
ty=y+1;
tx=x;
if(ty>=1 && ty<=N && tx>=1 && tx<=N)
{
if(A[y][x]>A[ty][tx])
{
if(D[ty][tx]>D[y][x])
{
D[ty][tx]=D[y][x];
Q.push(make_pair(D[ty][tx],make_pair(ty,tx)));
}
}
else
if(D[ty][tx]>D[y][x]+A[ty][tx]-A[y][x]+1)
{
D[ty][tx]=D[y][x]+A[ty][tx]-A[y][x]+1;
Q.push(make_pair(D[ty][tx],make_pair(ty,tx)));
}
}
}
}
void output(void)
{
printf("%d",D[N][N]);
}
int main(void)
{
input();
process();
output();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
39816 KB |
Output is correct |
2 |
Correct |
0 ms |
39816 KB |
Output is correct |
3 |
Correct |
0 ms |
39816 KB |
Output is correct |
4 |
Correct |
0 ms |
39816 KB |
Output is correct |
5 |
Correct |
0 ms |
39816 KB |
Output is correct |
6 |
Correct |
0 ms |
39816 KB |
Output is correct |
7 |
Correct |
0 ms |
39816 KB |
Output is correct |
8 |
Correct |
0 ms |
39816 KB |
Output is correct |
9 |
Correct |
0 ms |
39816 KB |
Output is correct |
10 |
Correct |
0 ms |
39816 KB |
Output is correct |
11 |
Correct |
0 ms |
39816 KB |
Output is correct |
12 |
Correct |
0 ms |
39816 KB |
Output is correct |
13 |
Correct |
0 ms |
39816 KB |
Output is correct |
14 |
Correct |
0 ms |
39816 KB |
Output is correct |
15 |
Correct |
0 ms |
39816 KB |
Output is correct |
16 |
Correct |
0 ms |
39816 KB |
Output is correct |
17 |
Correct |
0 ms |
39816 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
39816 KB |
Output is correct |
2 |
Correct |
0 ms |
39816 KB |
Output is correct |
3 |
Correct |
0 ms |
39816 KB |
Output is correct |
4 |
Correct |
0 ms |
39816 KB |
Output is correct |
5 |
Correct |
0 ms |
39816 KB |
Output is correct |
6 |
Correct |
0 ms |
39816 KB |
Output is correct |
7 |
Correct |
0 ms |
39816 KB |
Output is correct |
8 |
Correct |
0 ms |
39816 KB |
Output is correct |
9 |
Correct |
0 ms |
39816 KB |
Output is correct |
10 |
Correct |
0 ms |
39816 KB |
Output is correct |
11 |
Correct |
0 ms |
39816 KB |
Output is correct |
12 |
Correct |
0 ms |
39816 KB |
Output is correct |
13 |
Correct |
0 ms |
39816 KB |
Output is correct |
14 |
Correct |
0 ms |
39816 KB |
Output is correct |
15 |
Correct |
0 ms |
39816 KB |
Output is correct |
16 |
Correct |
0 ms |
39816 KB |
Output is correct |
17 |
Correct |
0 ms |
39816 KB |
Output is correct |
18 |
Correct |
0 ms |
39816 KB |
Output is correct |
19 |
Correct |
0 ms |
39816 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
39816 KB |
Output is correct |
2 |
Correct |
8 ms |
39816 KB |
Output is correct |
3 |
Correct |
16 ms |
39816 KB |
Output is correct |
4 |
Correct |
16 ms |
39816 KB |
Output is correct |
5 |
Correct |
16 ms |
39816 KB |
Output is correct |
6 |
Correct |
16 ms |
39816 KB |
Output is correct |
7 |
Correct |
12 ms |
39816 KB |
Output is correct |
8 |
Correct |
12 ms |
39816 KB |
Output is correct |
9 |
Correct |
12 ms |
39816 KB |
Output is correct |
10 |
Correct |
12 ms |
39816 KB |
Output is correct |
11 |
Correct |
12 ms |
39816 KB |
Output is correct |
12 |
Correct |
8 ms |
39816 KB |
Output is correct |
13 |
Correct |
12 ms |
39816 KB |
Output is correct |
14 |
Correct |
12 ms |
39816 KB |
Output is correct |
15 |
Correct |
12 ms |
39816 KB |
Output is correct |
16 |
Correct |
12 ms |
39816 KB |
Output is correct |
17 |
Correct |
12 ms |
39816 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
2000 ms |
40200 KB |
Program timed out |
2 |
Halted |
0 ms |
0 KB |
- |