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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#882881 | #8340. 3 Sum | ucup-team5077# | AC ✓ | 335ms | 19584kb | C++14 | 1.9kb | 2025-02-05 12:29:00 | 2025-02-05 12:29:00 |
Judging History
answer
#pragma GCC optimize(2)
#include <bits/stdc++.h>
using namespace std;
const int N=550,M=2e4+5,mod1=998244353,mod2=1e9+7,mod3=1e9+9;
int n,k;
char S[M];
int sum[M],has1[N],has2[N],has3[N];
int HAS1,HAS2,HAS3;
int cal(int *sum,int mod){
int tot=0;
for(int i=k-1;i>=0;i--){
tot=(1ll*tot*10%mod+sum[i])%mod;
}
return tot;
}
bool chk(int *sum,int d){
for(int i=0;i<k;i++) if(sum[i]!=d) return 0;
return 1;
}
map < tuple<int,int,int>, int> mp;
int main(){
scanf("%d%d",&n,&k);
int tot1=0,tot2=0;
for(int i=1;i<=n;i++){
scanf("\n%s",S);
int len=strlen(S);
for(int j=0;j<=k;j++) sum[j]=0;
for(int j=0;j<len;j++) sum[j%k]+=(S[len-1-j]-'0');
while(1){
for(int j=0;j<k;j++){
sum[j+1]+=sum[j]/10;
sum[j]%=10;
}
if(!sum[k]) break;
else sum[0]+=sum[k],sum[k]=0;
}
has1[i]=cal(sum,mod1);
has2[i]=cal(sum,mod2);
has3[i]=cal(sum,mod3);
tot1+=chk(sum,0);
tot2+=chk(sum,9);
// cout<<has1[i]<<" "<<has2[i]<<" "<<has3[i]<<endl;
// for(int j=k-1;j>=0;j--) cout<<sum[j];
// cout<<endl;
}
for(int j=0;j<k;j++) sum[j]=9;
HAS1=cal(sum,mod1);
HAS2=cal(sum,mod2);
HAS3=cal(sum,mod3);
int ans=1ll*(tot1+2)*(tot1+1)/2*tot1/3 + 1ll*(tot2+2)*(tot2+1)/2*tot2/3;
for(int i=1;i<=n;i++){
mp[make_tuple(has1[i],has2[i],has3[i])]++;
for(int j=i;j<=n;j++){
for(int c=1;c<=2;c++){
int w1=(HAS1*c%mod1+mod1-(has1[i]+has1[j])%mod1)%mod1;
int w2=(HAS2*c%mod2+mod2-(has2[i]+has2[j])%mod2)%mod2;
int w3=(HAS3*c%mod3+mod3-(has3[i]+has3[j])%mod3)%mod3;
ans+=mp[make_tuple(w1,w2,w3)];
}
}
}
cout<<ans;
}
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: 1ms
memory: 3840kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 96ms
memory: 19584kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 335ms
memory: 19584kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 41ms
memory: 3840kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2327631
result:
ok 1 number(s): "2327631"
Test #5:
score: 0
Accepted
time: 44ms
memory: 3840kb
input:
500 2 408542968136435277974575411503179002415404345446801430469044749372949272333801248935236224652806667129749035002588943020176263162139056819871274824302889304493205266143688886696157147111754418731401856424401766968832165255416237731963027205324149660112574729610391396555581935236134531799950318...
output:
212002
result:
ok 1 number(s): "212002"
Test #6:
score: 0
Accepted
time: 204ms
memory: 4608kb
input:
500 11500 75411775796562109942642493394321873284995260953010112281856775261847503626737348402159485133662757032091519863427156582689971229143089317472838196453888261138079171290535429921921548971897026706656838415620603757605079012541561774699628665865662183868374645956694140356716037674688084770628...
output:
7675
result:
ok 1 number(s): "7675"
Test #7:
score: 0
Accepted
time: 229ms
memory: 8704kb
input:
500 11500 85355036663164764459816544518601485185320972076300982726542821424439713703229669576802138231401047471351087455159512255765325323540671792953715169122669767368905391325060775725733157611188832204902997772518104188947349204726490597030311894441123834099315122116302203972018409854605418988681...
output:
1070
result:
ok 1 number(s): "1070"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3968kb
input:
1 11500 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed