Educational Codeforces Round 112 (Rated for Div. 2)
A
我寫的挺煩的，其實判斷一下奇偶數和有沒有a>0就行
#include <bits/stdc++.h>using namespace std
;#define int long longsigned main(){int t
;cin
>>t
;while (t
--){int n
;cin
>>n
;int a
= n
/6;n
%=6;int cou
= a
*6;if (n
==0){}else if (n
==1) {if (a
>0) cou
+=2;else cou
+=6;}else if (n
==2) {if (a
>0) cou
+=2;else cou
+=6;}else if (n
==3) {if (a
>0) cou
+=4;else cou
+=6;}else if (n
==4) {if (a
>0) cou
+=4;else cou
+=6;}else if (n
==5){cou
+=6;}cou
=cou
/2*5;cout
<<cou
<<endl
;}}
B
題目輸出要求就是迷惑人的
#include <bits/stdc++.h>
using namespace std
;
#define int long long
signed main()
{int t
;cin
>> t
;while (t
--){int w
, h
;cin
>> w
>> h
;int x1
, y1
, x2
, y2
;cin
>> x1
>> y1
>> x2
>> y2
;int a
, b
;cin
>> a
>> b
;int chax
= w
- (x2
- x1
), chay
= h
- (y2
- y1
);if (a
> chax
&& b
> chay
)cout
<< -1 << endl
;else{int mx
= max(x1
, w
- x2
);int my
= max(y1
, h
- y2
);int cou
;if (a
<= chax
&& b
<= chay
){cou
= min(a
- mx
,b
- my
);cou
= max((int)0,cou
);}else if (a
<=chax
){cou
= max(a
- mx
, (int)0);}else{cou
= max((int)0,b
- my
);}cout
<< cou
<< ".000000000" << endl
;}}
}
C
我一開始以為是DP什么的，結果發現賊簡單的一道題，沒啥意思。
#include <bits/stdc++.h>
using namespace std
;
#define int long long
const int N
= 100010;
int ch
[3][N
];
signed main()
{int t
;cin
>>t
;while (t
--){int n
,sum
=0;cin
>>n
;for (int i
=1;i
<3;i
++){for (int j
=1;j
<=n
;j
++){cin
>>ch
[i
][j
];if (i
==1) sum
+=ch
[i
][j
];}}int cou
= 0x3f3f3f3f;int sum1
= 0;for (int i
=1;i
<=n
;i
++){sum1
+=ch
[2][i
-1];sum
-=ch
[1][i
];sum
= max(sum
,sum1
);cou
= min(cou
,sum
);}cout
<<cou
<<endl
;}
}
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