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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 |
---|---|---|---|---|---|---|---|---|---|
#584178 | #6562. First Last | BINYU | WA | 1ms | 3820kb | C++14 | 2.3kb | 2024-09-23 09:55:53 | 2024-09-23 09:55:54 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
struct Sqare
{
int a[3][3];
bool operator < (const Sqare &b) const
{
for(int i = 0;i < 3;i++)
for(int j = 0;j < 3;j++)
if(a[i][j] != b.a[i][j])
return a[i][j] < b.a[i][j];
return 0;
}
}st;
int n,ans[3][3],cnt;
char c[25];
map <pair <Sqare,int> ,int> mp;
map <char,int> id;
int solve(Sqare st,int p)
{
if(mp[{st,p}])return mp[{st,p}];
int res = -1;
for(int i = 0;i < 3;i++)
if(st.a[p][i])
st.a[p][i]--,
res = max(res,-solve(st,i)),
st.a[p][i]++;
mp[{st,p}] = res;
return res;
}
int main()
{
scanf("%d",&n);
while(n--)
{
scanf("%s",c + 1);int m = strlen(c + 1);
if(!id[c[1]])id[c[1]] = ++cnt;
if(!id[c[m]])id[c[m]] = ++cnt;
st.a[id[c[1]] - 1][id[c[m]] - 1]++;
}
Sqare now = st;
for(int i = 0;i < 3;i++)
{
st.a[i][i] %= 2;
for(int j = 0;j < i;j++)
{
int mn = min(st.a[i][j],st.a[j][i]);
st.a[i][j] -= mn;st.a[j][i] -= mn;
}
}
int mn = min(min(st.a[0][1],st.a[1][2]),st.a[2][0]);
if(!mn)
{
swap(st.a[1][2],st.a[2][1]);
swap(st.a[0][2],st.a[0][1]);
swap(st.a[2][0],st.a[1][0]);
swap(st.a[1][1],st.a[2][2]);
swap(now.a[1][2],now.a[2][1]);
swap(now.a[0][2],now.a[0][1]);
swap(now.a[2][0],now.a[1][0]);
swap(now.a[1][1],now.a[2][2]);
}
mn = min(min(st.a[0][1],st.a[1][2]),st.a[2][0]);
if(mn <= 3)
{
for(int i = 0;i < 3;i++)
for(int j = 0;j < 3;j++)
if(st.a[i][j])
st.a[i][j]--,
ans[i][j] = solve(st,j),
st.a[i][j]++;
else
st.a[j][i]++,
ans[i][j] = solve(st,j),
st.a[j][i]--;
int sum = 0;
for(int i = 0;i < 3;i++)
for(int j = 0;j < 3;j++)
if(ans[i][j] == -1)
sum += now.a[i][j];
cout<<sum<<"\n";
}
else
{
st.a[0][1] -= mn;st.a[1][2] -= mn;st.a[2][0] -= mn;
int res = (mn * 3 + st.a[0][1] + st.a[1][2] + st.a[2][0]) % 2;
st.a[0][0] = st.a[1][1] = st.a[2][2] = 0;
for(int i = 0;i < 3;i++)
for(int j = 0;j < 3;j++)
if(st.a[i][j])
st.a[i][j]--,
ans[i][j] = solve(st,j),
st.a[i][j]++;
else
st.a[j][i]++,
ans[i][j] = solve(st,j),
st.a[j][i]--;
int sum = 0;
for(int i = 0;i < 3;i++)
for(int j = 0;j < 3;j++)
if(ans[i][j] == -1&&res == 1)
sum += now.a[i][j];
else if(ans[i][j] == 1&&res == 0)
sum += now.a[i][j];
cout<<sum<<"\n";
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3820kb
input:
3 attic climb alpha
output:
2
result:
ok single line: '2'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3744kb
input:
22 agora alpha antic aorta apnea arena aroma attic basic blurb china circa civic climb cobra cocoa comic comma conic crumb cubic cynic
output:
6
result:
ok single line: '6'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
3 ccabaabbba acbbbacccb ccccccacba
output:
1
result:
ok single line: '1'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3692kb
input:
11 mraa myga vtwm mala vvgm atvv vusm mznv avea atfv amgv
output:
7
result:
ok single line: '7'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3688kb
input:
1000 vznwivhoprv pvzcjyruxv phykv vozinczup vbp vgjxfotuhzhobfp pbv vygphslv vpnqrfep vzrphpfggoqcgv vgdjmzuckyedpnp vatmaxfp ppnmmwtqmv paawwp pspoycv vcjthv ppcvagp pteiqdonkklp vav vcsxv priqwbalidav vinp phqeijnqkgbxv pwvmbivmgvouv vwzhndzmqpcwkmp pyzlv vtvblfov vrdv vzrfmjdnaruwp pfup pwzv vwyv...
output:
478
result:
ok single line: '478'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3732kb
input:
1000 rlp pgscawiivpjndlp pxr ruzutr pqdhfniemqvvr rvar rp prarwp pkuinxempbmear rupxuanwlvawmr pp rzfvr rcsxoyirp pgpilljr pogeizvqlr rajolbgzswur rcap ryzqymwr rrpp rbxtr rfldblbesyhqr rjidcekyrir pqrycftr rftwgmmakykkmep pehkxkayuip pguxsgtuikvp rtxmynvoolrp pzmsljlpcr phcfdr plaop rydojaccp pzfr ...
output:
246
result:
ok single line: '246'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
1000 ffn fgikjn fwtakdbjn fsjnfzzn feqmuasubirsf faypin fcsdhfjvncfzsn nbcmvxemkan ngoqtaaon nlovkxxrbn fhdqkltoxvif fxpnqbguftsrhff fyniukvsmlf fibwbqckjpojglf nwcvf fxgeivnakggcn nn fkghlusecf neuwdafrkzptwf fcxn ff nlkxtn fdlsijtpbcjjcbn frlcjjnpsn ntyabhf nvf fdlmlhebidazhn fjn fstxgnmfof fqhusf...
output:
496
result:
ok single line: '496'
Test #8:
score: -100
Wrong Answer
time: 0ms
memory: 3632kb
input:
15 adb bdc cda aeb bec cea afb bfc cfa agb bgc cga ahb bhc cha
output:
0
result:
wrong answer 1st lines differ - expected: '15', found: '0'