23 lines
446 B
C++
23 lines
446 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int n, m;
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int ans;
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int main() {
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cin >> n >> m;
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//出发点特判
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if (n == 1 && m == 1) {
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puts("1");
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return 0;
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}
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//奇偶行分类，然后n = m特判
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//如果n是奇数
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if (n & 1) {
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ans = n + m - 1;
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if (n == m) ans--;
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} else // n是偶数
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ans = n + (m - 1) / 2 * 2;
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printf("%d", ans);
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return 0;
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} |