easy
2025-06-28 15:58:16
发布于:浙江
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#include <iostream>
#include <vector>
using namespace std;
vector<vector<int>> generateMatrix(int n) {
vector<vector<int>> matrix(n, vector<int>(n, 0));
vector<pair<int, int>> directions = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};
int row = 0, col = 0, dir_idx = 0;
int num = 1;
while (num <= n * n) {
matrix[row][col] = num;
num++;
int next_row = row + directions[dir_idx].first;
int next_col = col + directions[dir_idx].second;
if (next_row < 0 || next_row >= n ||
next_col < 0 || next_col >= n ||
matrix[next_row][next_col] != 0) {
dir_idx = (dir_idx + 1) % 4;
next_row = row + directions[dir_idx].first;
next_col = col + directions[dir_idx].second;
}
row = next_row;
col = next_col;
}
return matrix;
}
int main() {
int n,i,j;
cin>>n>>i>>j;
vector<vector<int>> result = generateMatrix(n);
cout<<result[i-1][j-1];
return 0;
}
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