QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#350279 | #8340. 3 Sum | grass8cow | AC ✓ | 154ms | 9980kb | C++17 | 978b | 2024-03-10 16:31:44 | 2024-09-20 10:20:42 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int n,m;
char c[101000];
int zk[510],a[20100];
const int mod=1e9+7,W=131;
map<int,int>tp;
int main(){
scanf("%d%d",&n,&m);
for(int i=1,L;i<=n;i++){
scanf("%s",c);L=strlen(c);reverse(c,c+L);
for(int j=0;j<m;j++)a[j]=0;
for(int j=0;j<L;j++)a[j%m]+=c[j]-'0';
if(m==1)a[0]%=9;
else{
for(int j=0;j<m;j++)a[(j==m-1)?0:(j+1)]+=a[j]/10,a[j]%=10;
int t=0;
while(a[t]>=10)a[(t==m-1)?0:(t+1)]+=a[t]/10,a[t]%=10,t=(t==m-1)?0:(t+1);
bool fl=1;
for(int j=0;j<m;j++)fl&=(a[j]==9);
if(fl)memset(a,0,sizeof(a));
}
int z=0;
for(int j=m-1;j>=0;j--)z=(10ll*z%mod+a[j])%mod;
zk[i]=z;
}
int e=1;
for(int i=1;i<=m;i++)e=10ll*e%mod;e=(e+mod-1)%mod;
int ans=0;
for(int j=n;j;j--){
int o=(mod-zk[j])%mod;
tp[o]++;
(o+=e)%=mod;
tp[o]++;
(o+=e)%=mod;
tp[o]++;
for(int i=j;i;i--){
int vp=(zk[i]+zk[j])%mod;
ans+=tp[vp];
}
}
return printf("%d",ans),0;
}
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: 3960kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 38ms
memory: 9900kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 154ms
memory: 9980kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 44ms
memory: 3840kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2327631
result:
ok 1 number(s): "2327631"
Test #5:
score: 0
Accepted
time: 38ms
memory: 4056kb
input:
500 2 408542968136435277974575411503179002415404345446801430469044749372949272333801248935236224652806667129749035002588943020176263162139056819871274824302889304493205266143688886696157147111754418731401856424401766968832165255416237731963027205324149660112574729610391396555581935236134531799950318...
output:
212002
result:
ok 1 number(s): "212002"
Test #6:
score: 0
Accepted
time: 116ms
memory: 4252kb
input:
500 11500 75411775796562109942642493394321873284995260953010112281856775261847503626737348402159485133662757032091519863427156582689971229143089317472838196453888261138079171290535429921921548971897026706656838415620603757605079012541561774699628665865662183868374645956694140356716037674688084770628...
output:
7675
result:
ok 1 number(s): "7675"
Test #7:
score: 0
Accepted
time: 123ms
memory: 6020kb
input:
500 11500 85355036663164764459816544518601485185320972076300982726542821424439713703229669576802138231401047471351087455159512255765325323540671792953715169122669767368905391325060775725733157611188832204902997772518104188947349204726490597030311894441123834099315122116302203972018409854605418988681...
output:
1070
result:
ok 1 number(s): "1070"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3880kb
input:
1 11500 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed