Problem

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Solution

这道题目一开始用时间作为一个大循环去进行递推,但是发现并不是很好判断歌曲是否有唱过,所以后来还是采用歌曲作为大循环,再以时间为小循环。不过记得要留出1s来给《劲歌金曲》

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#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;

int T, n, t, cas, ans;
int song[51], dp[9001];
long long lis[9001];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
//freopen("input.txt" , "r", stdin );
//freopen("output.txt", "w", stdout);
cin >> T;
while(T--) {
cin >> n >> t;
memset(dp, 0x8f, sizeof(dp));
dp[0] = 0;
ans = t-1;
for (int i = 0; i < n; ++i) cin >> song[i];
for (int i = 0; i < n; ++i)
for (int j = t-1; j >= song[i]; --j)
dp[j] = max(dp[j], dp[j-song[i]]+1);
for (int i = t-1; i >=0; --i)
ans = dp[i]>dp[ans] ? i : ans;
cout << "Case " << ++cas << ": "
<< dp[ans]+1 << ' ' << ans+678 << '\n';
}
return 0;
}