QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#590145 | #8340. 3 Sum | DBsoleil | AC ✓ | 122ms | 4132kb | C++20 | 1.2kb | 2024-09-25 22:00:13 | 2024-10-13 18:56:12 |
Judging History
answer
#include<bits/stdc++.h>
#define pb push_back
using namespace std;
typedef long long ll;
const int N=505,M=20005;
const ll MOD=1e9+9;
int n,k,ans;
ll a[N],b[M],mod;
char s[M];
ll getll()
{
scanf("%s",s);
ll res=0,len=strlen(s),jd=0;
for(int i=0;i<len;i++) b[i]=s[i]-'0';
reverse(b,b+len);
while(len>k)
{
for(int i=k;i<len;i++) b[i%k]+=b[i],b[i]=0;
for(int i=0;i<len;i++) b[i+1]+=b[i]/10,b[i]%=10;
while(len>0&&b[len-1]==0) len--;
}
for(int i=len-1;i>=0;i--) res=(res*10+b[i])%MOD;
if(res==mod) res=0;
//assert(k>1||len==1);
//cerr<<res<<endl;
return res;
}
bool check(ll x)
{
return (x==mod||x==mod*2%MOD||x==0);
}
void input()
{
scanf("%d%d",&n,&k),mod=1;
for(int i=1;i<=k;i++) mod=mod*10%MOD;
mod=(mod-1+MOD)%MOD;
for(int i=1;i<=n;i++) a[i]=getll();
//for(int i=1;i<=n;i++) cerr<<' '<<a[i];
//cerr<<endl;
}
void solve()
{
input();
for(int i=1;i<=n;i++) for(int j=i;j<=n;j++) for(int k=j;k<=n;k++)
{
ll sum=(a[i]+a[j]+a[k])%MOD;
if(check(sum)) ans++;
}
printf("%d\n",ans);
}
int main()
{
solve();
}
这程序好像有点Bug,我给组数据试试?
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3776kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 32ms
memory: 3828kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 113ms
memory: 3980kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 122ms
memory: 4012kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2327631
result:
ok 1 number(s): "2327631"
Test #5:
score: 0
Accepted
time: 105ms
memory: 4060kb
input:
500 2 408542968136435277974575411503179002415404345446801430469044749372949272333801248935236224652806667129749035002588943020176263162139056819871274824302889304493205266143688886696157147111754418731401856424401766968832165255416237731963027205324149660112574729610391396555581935236134531799950318...
output:
212002
result:
ok 1 number(s): "212002"
Test #6:
score: 0
Accepted
time: 107ms
memory: 4080kb
input:
500 11500 75411775796562109942642493394321873284995260953010112281856775261847503626737348402159485133662757032091519863427156582689971229143089317472838196453888261138079171290535429921921548971897026706656838415620603757605079012541561774699628665865662183868374645956694140356716037674688084770628...
output:
7675
result:
ok 1 number(s): "7675"
Test #7:
score: 0
Accepted
time: 112ms
memory: 4132kb
input:
500 11500 85355036663164764459816544518601485185320972076300982726542821424439713703229669576802138231401047471351087455159512255765325323540671792953715169122669767368905391325060775725733157611188832204902997772518104188947349204726490597030311894441123834099315122116302203972018409854605418988681...
output:
1070
result:
ok 1 number(s): "1070"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3876kb
input:
1 11500 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed