AC Milan VS Juventus
Time Limit: 3000/1000MS (Java/Others) Memory Limit: 65535/65535KB (Java/Others)
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Status
Kennethsnow
and Hlwt
both
love football.
One day, Kennethsnow
wants
to review the match in 20032003 between
AC Milan and Juventus for the Championship Cup. But before the
penalty shootout. he fell asleep.
The next day, he asked Hlwt
for
the result. Hlwt
said that it scored aa:bb in
the penalty shootout.
Kennethsnow
had some doubt
about what Hlwt
said because Hlwt
is
a fan of Juventus but Kennethsnow
loves AC Milan.
So he wanted to know whether the result can be a legal result of a penalty shootout. If it can be, output Yes
,
otherwise output No
.
The rule of penalty shootout is as follows:
- There will be 55 turns,
in each turn, 22 teams
each should take a penalty shoot. If goal, the team get 11 point.
After each shoot, if the - winner can be confirmed(i.e: no matter what happened after this shoot, the winner will not change), the match end immediately.
- If after 55 turns
the 22 teams
score the same point. A new turn will be added, until that one team get a point and the other not in a turn.
Before the penalty shootout begins, the chief referee will decide which team will take the shoot first, and afterwards, two teams will take shoot
one after the other. Since Kennethsnow fell asleep last night, he had no idea whether AC Milan or Juventus took the first shoot.
Input
The only line contains 2 integers a, b.
Means the result that Hlwt
said.
0≤a,b≤10
Output
Output a string Yes
or No
,
means whether the result is legal.
Sample input and output
Sample Input | Sample Output |
---|---|
3 2 |
Yes |
2 5 |
No |
Hint
The Sample 1 is
the actual result of the match in 2003.
The Sample 2,
when it is 2:4 after 4 turns,
AC Milan can score at most 1point
in the next turn. So Juventus has win when it is 2:4.
So the result cannot be 22:55.
This story happened in a parallel universe. In this world where we live, kennethsnow
is
a fan of Real Madrid.
Source
The 13th UESTC Programming Contest Preliminary
The question is from here.
My Solution
分情况讨论清楚就好,然后注意 a == b 的时候也是No
把分类出来的区间理清楚,不要条件里面混杂着不该包含的东西
#include <iostream> #include <cstdio> #include <cmath> using namespace std; int main() { int a, b; scanf("%d%d", &a, &b); if(a == b )printf("No"); else if((a == 5 && b <5) || (b == 5&& a <5)) {if(abs(a-b) >= 3) printf("No");else printf("Yes"); } //!! else if(a < 5 && b <5) {if(abs(a-b) >= 4) printf("No");else printf("Yes"); } else {if(abs(a-b) > 1) printf("No");else printf("Yes"); } return 0; }
Thank you all!