QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #179414 | #6338. Chorus | maoyiting | 40 | 277ms | 3972kb | C++14 | 629b | 2023-09-14 21:15:35 | 2023-09-14 21:15:36 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=5e3+5;
int n,k,t,c[N],g[N],ans;
long long f[N];
char s[N];
bool ok(int v){
fill(f+1,f+1+n,1e18);
for(int i=1;i<=n;i++){
int sum=0;
for(int j=i;j<=n;j++){
sum+=max(0,c[j]-(i-1));
if(f[i-1]+sum+v<f[j]) f[j]=f[i-1]+sum+v,g[j]=g[i-1]+1;
}
}
if(g[n]<=k) ans=f[n]-1ll*v*k;
return g[n]<=k;
}
signed main(){
scanf("%d%d%s",&n,&k,s+1);
for(int i=1,b=0;i<=2*n;i++){
if(s[i]=='A') c[++t]=b;
else b++;
}
int l=0,r=1e9;
while(l<=r){
int mid=(l+r)/2;
if(ok(mid)) r=mid-1;
else l=mid+1;
}
printf("%d\n",ans);
return 0;
}
详细
Subtask #1:
score: 16
Accepted
Test #1:
score: 16
Accepted
time: 0ms
memory: 3776kb
input:
1 1 BA
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3964kb
input:
7 5 ABBAAABBABABBA
output:
3
result:
ok 1 number(s): "3"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
10 3 BABBABAABAABBABBBAAA
output:
26
result:
ok 1 number(s): "26"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
10 2 AAABBABABBAAABBBAABB
output:
11
result:
ok 1 number(s): "11"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
10 1 BBBBBBBBBBAAAAAAAAAA
output:
100
result:
ok 1 number(s): "100"
Test #6:
score: 0
Accepted
time: 1ms
memory: 3776kb
input:
10 2 BBBBBBBBBBAAAAAAAAAA
output:
75
result:
ok 1 number(s): "75"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
10 9 BBBBBBBBBBAAAAAAAAAA
output:
56
result:
ok 1 number(s): "56"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
10 10 BBBBBBBBBBAAAAAAAAAA
output:
55
result:
ok 1 number(s): "55"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
10 10 ABABABABABABABABABAB
output:
0
result:
ok 1 number(s): "0"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
10 2 ABAAABABABBBABABABAB
output:
14
result:
ok 1 number(s): "14"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
10 4 ABAABBAAABBBAAABBBAB
output:
2
result:
ok 1 number(s): "2"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
10 4 ABAAABBBAAABBBAABBAB
output:
2
result:
ok 1 number(s): "2"
Subtask #2:
score: 24
Accepted
Dependency #1:
100%
Accepted
Test #13:
score: 24
Accepted
time: 1ms
memory: 3888kb
input:
179 54 AAABABABABBAAABBABBABBABBBAAABAAAAABBBABAAAAABABBBAABBBABABBAABABAABABBBBABAABAABABABBBABBAABABBAABBAABABBAAABAAAAAAAABBAAAAABAAABBBBBBBABBAABBBABABAABBAABBABABABBABAAABABAAABABABBAABABAAABBABABABABABBAAABABBBBBBBAABBBAABABBBBABAABBAAAABAABBABABAABAAABABAAAABBBAABAAABBABABBBABAAABAABBBABBBBBA...
output:
41
result:
ok 1 number(s): "41"
Test #14:
score: 0
Accepted
time: 4ms
memory: 3856kb
input:
500 93 ABABAABBBBABAABAABAAAAABABBBBBABABBABAAAABAABBBBABAABBBAAABBABABAAAABAABBABAAABBAAABBBABBAAAAAABABABBBABABBBAABAAABAABABAAABAAABBAAABABBBAABBABBBABBBAABAAAABBBAABBBABAAAAAABABABBBABAAAABBBBBAABBBABAAABAABBBABABAABABBBBABBABBBBBBBABAAAABAABAABBABBBAABBBAAAAAAABBAABAAABBBABBBAAABABBBBAABBBABABB...
output:
235
result:
ok 1 number(s): "235"
Test #15:
score: 0
Accepted
time: 4ms
memory: 3972kb
input:
500 273 AAABBABAABAAABABAABBBABAAAABBAAABBABAAABBABABAAAABBBAAABBBAABAABAABBABABABABBAAABBBBBBBAABABBAABABBBAABBBBAAABAAAABABBABBBBBAABAABABAAAABBABABABAAAABBBAAAAABABBAABABABAAABBABAAAABABBBAAABABAABBAABBBAABAABBBAABABBBBABAAABAABBBBABBABAAABABBAABABBABBBBBBBABAABAAAABABABAAABABABABAABBAABBBABBBAAB...
output:
0
result:
ok 1 number(s): "0"
Test #16:
score: 0
Accepted
time: 4ms
memory: 3968kb
input:
500 1 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB...
output:
250000
result:
ok 1 number(s): "250000"
Test #17:
score: 0
Accepted
time: 4ms
memory: 3968kb
input:
500 2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB...
output:
187500
result:
ok 1 number(s): "187500"
Test #18:
score: 0
Accepted
time: 2ms
memory: 3876kb
input:
500 499 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB...
output:
125251
result:
ok 1 number(s): "125251"
Test #19:
score: 0
Accepted
time: 4ms
memory: 3804kb
input:
500 500 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB...
output:
125250
result:
ok 1 number(s): "125250"
Test #20:
score: 0
Accepted
time: 4ms
memory: 3972kb
input:
500 10 ABAAABBBAABBABABAABAABABBBAABABABBAABABAABAABABABBBBABAABBAAAAAAABAABAABAABBABBABABBBABABBAABABBBBAABBBBABAAAAAAABAABAAABABABBAABABBABBAAAABAABBBAABABBABABBBBAAAABABBAAAAABAABBBBBBBBABBABBBAABBABBAAAABAABBBBBBAABBBAAAABABBAAABAABAABBBBAABBAAABBAABBAAAAABAAAAAABBAABABBABABBBABAAABBBAAABABAAABB...
output:
9129
result:
ok 1 number(s): "9129"
Test #21:
score: 0
Accepted
time: 4ms
memory: 3888kb
input:
500 500 ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB...
output:
0
result:
ok 1 number(s): "0"
Test #22:
score: 0
Accepted
time: 2ms
memory: 3972kb
input:
500 416 ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB...
output:
84
result:
ok 1 number(s): "84"
Test #23:
score: 0
Accepted
time: 4ms
memory: 3784kb
input:
499 167 ABAABBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAAB...
output:
2
result:
ok 1 number(s): "2"
Test #24:
score: 0
Accepted
time: 4ms
memory: 3900kb
input:
499 167 ABAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAAABBBAA...
output:
2
result:
ok 1 number(s): "2"
Subtask #3:
score: 0
Wrong Answer
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Test #25:
score: 0
Wrong Answer
time: 277ms
memory: 3944kb
input:
4918 2048 ABBBBBBAAAAABBBBAAAABBABBAAAABBBAABBBABABBAAAABBBAAAABAABBAAABAAABAABBAAABAAABBBAABBBBBBABAABBBBAAAAABBBBBABBBABABBBBBABAAAAAABAABBABBABBBBBAABAABAAAAAABBBBBAABBBABBBAAABBABBABBBAABBBBBBABBBABAABABABABABAAABBABABBAABAABBBBABABBAABABABABBAABABABBABABABAAABABBBABBBABBABBBBAAAABBBBAAABBBABBBA...
output:
-1486618624
result:
wrong answer 1st numbers differ - expected: '138308', found: '-1486618624'
Subtask #4:
score: 0
Skipped
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Dependency #3:
0%
Subtask #5:
score: 0
Skipped
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Dependency #3:
0%