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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#534132 | #8340. 3 Sum | Forza_Ferrari | WA | 139ms | 3900kb | C++14 | 1.4kb | 2024-08-26 21:03:41 | 2024-08-26 21:03:41 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<string>
#include<map>
#include<random>
#include<chrono>
using namespace std;
#define int long long
int n,m,ans,cnt;
const int mod=998244853;
string s;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
int w[501],a[20005];
inline int solve(string x)
{
for(int i=0;i<m;++i)
{
a[i]=0;
for(int j=i;j<x.length();j+=m)
a[i]+=x[j]-'0';
}
for(;a[0]>=10;)
for(int j=0;j<m;++j)
{
a[j+1]+=a[j]/10;
a[j]%=10;
}
int res=0;
for(int j=m-1;j>=0;--j)
res=(1ll*res*10%mod+a[j])%mod;
return res;
}
inline void solve()
{
int val1=0,val2=0,val3=0;
for(int i=1;i<=m;++i)
val1=(10ll*val1%mod+9)%mod;
val2=(val1+val1)%mod,val3=(val1+val2)%mod;
for(int i=1;i<=n;++i)
for(int j=i;j<=n;++j)
for(int k=j;k<=n;++k)
ans+=(w[i]+w[j]+w[k])%mod==0||(w[i]+w[j]+w[k])%mod==val1||(w[i]+w[j]+w[k])%mod==val2||(w[i]+w[j]+w[k])%mod==val3;
}
inline void init()
{
ios::sync_with_stdio(0);
cin.tie(0);
}
signed main()
{
init();
cin>>n>>m;
for(int i=1;i<=n;++i)
{
cin>>s;
reverse(s.begin(),s.end());
w[i]=solve(s);
}
solve();
cout<<ans<<'\n';
cout.flush();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3716kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 54ms
memory: 3632kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: -100
Wrong Answer
time: 139ms
memory: 3900kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
1
result:
wrong answer 1st numbers differ - expected: '0', found: '1'