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 |
---|---|---|---|---|---|---|---|---|---|
#355517 | #8340. 3 Sum | arnold518 | AC ✓ | 160ms | 3868kb | C++17 | 2.2kb | 2024-03-16 19:05:26 | 2024-03-18 21:46:13 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 500;
const int MAXK = 2e4;
const ll MOD = 998244353;
int N, K;
string S;
int P[MAXK+10];
pll A[MAXN+10];
ll B[MAXN+10];
ll hashval()
{
ll pp=1, ret=0;
for(int i=0; i<=K; i++)
{
ret=(ret+pp*P[i])%MOD;
pp=pp*10%MOD;
}
return ret;
}
int main()
{
ios_base::sync_with_stdio(false); cin.tie(NULL);
cin>>N>>K;
for(int i=1; i<=N; i++)
{
cin>>S;
reverse(S.begin(), S.end());
for(int j=0; j<S.size(); j++) P[j%K]+=S[j]-'0';
for(int j=0; j<K; j++)
{
P[j+1]+=P[j]/10;
P[j]%=10;
}
while(P[K])
{
P[0]+=P[K]; P[K]=0;
for(int j=0; j<K; j++)
{
P[j+1]+=P[j]/10;
P[j]%=10;
}
}
bool flag=true;
for(int j=0; j<K; j++) if(P[j]!=9) flag=false;
if(flag) for(int j=0; j<K; j++) P[j]=0;
flag=true;
for(int j=0; j<K; j++) if(P[j]!=0) flag=false;
if(flag)
{
B[i]=0;
A[i].first=0;
for(int j=0; j<K; j++) P[j]=9;
A[i].second=hashval();
}
else
{
B[i]=hashval();
for(int j=0; j<K; j++) P[j]=9-P[j];
A[i].first=hashval();
for(int j=0; j<K; j++)
{
if(P[j]) { P[j]--; break; }
P[j]=9;
}
P[K]=1;
A[i].second=hashval();
}
for(int j=0; j<=K; j++) P[j]=0;
//printf("%lld / %lld %lld\n", B[i], A[i].first, A[i].second);
}
int ans=0;
for(int i=1; i<=N; i++)
{
vector<ll> V;
for(int j=1; j<=i; j++) V.push_back(A[j].first), V.push_back(A[j].second);
sort(V.begin(), V.end());
for(int j=i; j<=N; j++)
{
ll p=(B[i]+B[j])%MOD;
ans+=upper_bound(V.begin(), V.end(), p)-lower_bound(V.begin(), V.end(), p);
}
}
cout<<ans<<"\n";
}
这程序好像有点Bug,我给组数据试试?
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3760kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 25ms
memory: 3868kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 160ms
memory: 3724kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 38ms
memory: 3648kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2327631
result:
ok 1 number(s): "2327631"
Test #5:
score: 0
Accepted
time: 40ms
memory: 3848kb
input:
500 2 408542968136435277974575411503179002415404345446801430469044749372949272333801248935236224652806667129749035002588943020176263162139056819871274824302889304493205266143688886696157147111754418731401856424401766968832165255416237731963027205324149660112574729610391396555581935236134531799950318...
output:
212002
result:
ok 1 number(s): "212002"
Test #6:
score: 0
Accepted
time: 116ms
memory: 3600kb
input:
500 11500 75411775796562109942642493394321873284995260953010112281856775261847503626737348402159485133662757032091519863427156582689971229143089317472838196453888261138079171290535429921921548971897026706656838415620603757605079012541561774699628665865662183868374645956694140356716037674688084770628...
output:
7675
result:
ok 1 number(s): "7675"
Test #7:
score: 0
Accepted
time: 124ms
memory: 3628kb
input:
500 11500 85355036663164764459816544518601485185320972076300982726542821424439713703229669576802138231401047471351087455159512255765325323540671792953715169122669767368905391325060775725733157611188832204902997772518104188947349204726490597030311894441123834099315122116302203972018409854605418988681...
output:
1070
result:
ok 1 number(s): "1070"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3672kb
input:
1 11500 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed