题意:一棋子初始位于(1,1),A先手,A可以横移棋子,B可以竖移棋子,或者,到某人行动的时候可以立刻终止游戏。游戏执行k轮后会结束。最终棋子停留的底下的值为最终得分,A目标是最大化,B目标是最小化。求最终答案。
思路:
accode:
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <algorithm>
#include <math.h>
#include <map>
using namespace std;
typedef long long ll;
const int maxn = 1e5 + 9;
ll n, m, k, x, y, ans;
ll r[maxn], c[maxn];
inline void solve()
{
ans = 0;
scanf("%lld %lld %lld", &n, &m, &k);
for(int i = 1; i <= n; ++i)
r[i] = 0;
for(int i = 1; i <= m; ++i)
c[i] = (int)1e9;
for(int i = 1; i <= n; ++i)
{
for(int j = 1; j <= m; ++j)
{
scanf("%lld", &x);
if(i == 1 && j == 1)
y = x;
r[i] = max(x, r[i]);
c[j] = min(x, c[j]);
}
}
if(k == 1)
{
printf("%lld\n", r[1]);
return ;
}
else if(k & 1)
{
ans = 1e9;
for(int i = 1; i <= n; ++i)
ans = min(ans, r[i]);
}
else
{
for(int i = 1; i <= m; ++i)
ans = max(ans, c[i]);
}
ans = max(ans, y);
printf("%lld\n", ans);
}
int main()
{
int T;
scanf("%d", &T);
while(T--)
{
solve();
}
return 0;
}