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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#350611 | #8340. 3 Sum | ucup-team134 | WA | 178ms | 39728kb | C++17 | 3.2kb | 2024-03-10 21:25:13 | 2024-03-10 21:25:13 |
Judging History
answer
#include<bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
typedef long long ll;
using namespace std;
typedef pair<int,int> pii;
const int nmods=2;
const int mods[nmods]={998244353,1000000007};
int mod=998244353;
inline int add(int x,int y){int ret=x+y;if(ret>=mod)ret-=mod;return ret;}
inline int sub(int x,int y){int ret=x-y;if(ret<0)ret+=mod;return ret;}
inline int mul(int x,int y){return ((ll)x*y)%mod;}
inline int step(int base,int pw){int ret=1;while(pw){if(pw&1)ret=mul(ret,base);base=mul(base,base);pw>>=1;}return ret;}
inline int invv(int x){return step(x,mod-2);}
const int K=20050;
const int N=505;
int a[N][K];
char s[K];
void Add(int idx,int l,int r,int k){
for(int i=0;i<r-l+1;i++){
a[idx][i]+=s[r-i]-'0';
}
for(int i=0;i<k;i++){
if(a[idx][i]>=10){
int carry=a[idx][i]/10;
int newVal=a[idx][i]%10;
a[idx][i]=newVal;
a[idx][(i+1)%k]+=carry;
}
}
}
array<int,nmods> operator + (const array<int,nmods>& a, const array<int,nmods>& b){
array<int,nmods> ans;
for(int j=0;j<nmods;j++){
mod=mods[j];
ans[j]=add(a[j],b[j]);
}
return ans;
}
array<int,nmods> operator - (const array<int,nmods>& a, const array<int,nmods>& b){
array<int,nmods> ans;
for(int j=0;j<nmods;j++){
mod=mods[j];
ans[j]=sub(a[j],b[j]);
}
return ans;
}
array<int,nmods> operator * (const array<int,nmods>& a, int b){
array<int,nmods> ans;
for(int j=0;j<nmods;j++){
mod=mods[j];
ans[j]=mul(a[j],b);
}
return ans;
}
array<int,nmods> operator + (const array<int,nmods>& a, int b){
array<int,nmods> ans;
for(int j=0;j<nmods;j++){
mod=mods[j];
ans[j]=add(a[j],b);
}
return ans;
}
array<int,nmods> A[N];
ll ans;
void Try(array<int,nmods> val,int n){
//printf("val: %i\n",val[1]);
/*map<array<int,nmods>,int> cnt;
for(int i=1;i<=n;i++){
cnt[val-A[i]]++;
printf("%i\n",(val-A[i])[1]);
}*/
for(int i=1;i<=n;i++){
for(int j=i;j<=n;j++){
for(int k=j;k<=n;k++){
if(A[i]+A[j]+A[k]==val)ans++;
// printf("sum %i\n",(A[i]+A[j]+A[k])[1]);
}
}
}
}
int main(){
int n,k;
scanf("%i %i",&n,&k);
for(int i=1;i<=n;i++){
scanf("%s",s+1);
int m=strlen(s+1);
for(int j=m;j>0;j-=k){
Add(i,max(1,j-k+1),j,k);
}
}
for(int i=1;i<=n;i++){
for(int j=0;j<nmods;j++)A[i][j]=0;
for(int j=k-1;j>=0;j--){
A[i]=A[i]*10;
A[i]=A[i]+a[i][j];
}
//printf("%i\n",A[i][0]);
}
array<int,nmods> val;
for(int i=0;i<nmods;i++)val[i]=0;
Try(val,n);
for(int i=0;i<k;i++){
val=val*10;
val=val+9;
}
Try(val,n);
for(int i=0;i<nmods;i++)val[i]=0;
val=val+1;
for(int i=0;i<k;i++){
val=val*10;
if(i+1==k){
val=val+8;
}else{
val=val+9;
}
}
Try(val,n);
printf("%lld\n",ans);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3872kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 78ms
memory: 7604kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 155ms
memory: 39728kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: -100
Wrong Answer
time: 178ms
memory: 5928kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2277515
result:
wrong answer 1st numbers differ - expected: '2327631', found: '2277515'