24 lines
445 B
C++
24 lines
445 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int m, n;
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int dx[] = {0, 1};
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int dy[] = {1, 0};
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int cnt;
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void dfs(int x, int y) {
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if (x == m && y == n) {
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cnt++;
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return;
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}
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for (int i = 0; i < 2; i++) {
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int tx = x + dx[i], ty = y + dy[i];
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if (tx <= m && ty <= n)
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dfs(tx, ty);
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}
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}
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int main() {
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cin >> m >> n;
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dfs(1, 1);
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printf("%d", cnt);
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return 0;
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} |