OJ-Problems-Source/HDOJ/2905_autoAC.cpp

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#include <stdio.h>
#include <string.h>
#include <algorithm>
using namespace std;
const int oo = 1000000000;
char s[10010], cards[2][50];
int dp[10010], nc[2], value[300];
void update(int& x, int y)
{
if (y > x) x = y;
}
int lv(int u)
{
int ret = 0;
for (int i = 0; i < nc[u]; ++i) ret += value[cards[u][i]];
return ret;
}
int hv(int u)
{
int ret = 0, x = 0;
for (int i = 0; i < nc[u]; ++i)
if (cards[u][i] == 'A') ++x, ret += 11;
else ret += value[cards[u][i]];
while (ret > 21 && x > 0) ret -= 10, --x;
return ret;
}
void getCard(int u, int& cur)
{
cards[u][nc[u]++] = s[cur++];
}
int main()
{
for (int i = '2'; i <= '9'; ++i) value[i] = i-'0';
value['T'] = value['J'] = value['Q'] = value['K'] = 10;
value['A'] = 1;
int T, n, p, q, l[2];
scanf("%d", &T);
while (T--) {
scanf("%d%d%d", &n, &p, &q);
int cur = 0;
while (cur < n) {
scanf("%s", s+1+cur);
cur += strlen(s+1+cur);
}
for (int i = 1; i <= n; ++i) dp[i] = -oo;
dp[0] = 0;
for (int i = 0; i < n; ++i) if(dp[i] != -oo) {
if (i+4 > n) {
update(dp[n], dp[i]);
continue;
}
int cur = i + 1;
nc[0] = nc[1] = 0;
getCard(0, cur);
getCard(1, cur);
getCard(0, cur);
getCard(1, cur);
l[0] = value[cards[0][0]]+value[cards[0][1]];
while(1) {
if (l[0] > 21) {
update(dp[cur-1], dp[i] - p);
break;
}
int pre = cur;
nc[1] = 2;
while (pre <= n && hv(1) < 17) getCard(1, pre);
if (hv(1) < 17) update(dp[n], dp[i]);
else {
int h[2] = {hv(0), hv(1)};
if (lv(1) > 21) update(dp[pre-1], dp[i] + q);
else if (h[0] > h[1]) update(dp[pre-1], dp[i] + q);
else if (h[0] < h[1]) update(dp[pre-1], dp[i] - p);
else update(dp[pre-1], dp[i]);
}
if (cur <= n) {
l[0] += value[s[cur]];
getCard(0, cur);
}
else {
update(dp[n], dp[i]);
break;
}
}
}
printf("%d\n", dp[n]);
}
return 0;
}