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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#547369 | #8340. 3 Sum | light_ink_dots# | TL | 455ms | 40996kb | C++20 | 1.2kb | 2024-09-04 21:04:46 | 2024-09-04 21:04:46 |
Judging History
answer
//最接近夜的灰褪去的那抹苍蓝
#include<bits/stdc++.h>
using namespace std;
const int maxn=505,maxm=20005;
int n,m,T,ans,flg,cnt,goal[3][4],mod[4]={685800001,656000003,363600007,196600009};
int a[maxn][maxm],mul[4][maxm],hsh[4][maxn];
string s;
int main(){
scanf("%d%d",&n,&m);
for(int c=0;c<4;c++){
mul[c][0]=1;
for(int i=1;i<=m;i++)
mul[c][i]=10ll*mul[c][i-1]%mod[c];
for(int i=0;i<m;i++){
goal[1][c]=(goal[1][c]+9ll*mul[c][i])%mod[c];
goal[2][c]=(goal[2][c]+18ll*mul[c][i])%mod[c];
}
}
for(int i=1;i<=n;i++){
cin>>s;
int l=s.size();
for(int j=0;j<l;j++)
a[i][l-j-1]=s[j]-48;
l--;
while(l>=m){
a[i][l%m]+=a[i][l],a[i][l]=0,l--;
int j=0;
while(a[i][j]>9)
a[i][j+1]+=a[i][j]/10,a[i][j]%=10,j++;
}
for(int j=m-1;j>=0;j--){
// printf("%d",a[i][j]);
for(int c=0;c<4;c++)
hsh[c][i]=(hsh[c][i]+1ll*mul[c][j]*a[i][j])%mod[c];
}
// puts("");
}
//sum=0,m,2m
for(int i=1;i<=n;i++)
for(int j=i;j<=n;j++)
for(int k=j;k<=n;k++)
for(int d=0;d<3;d++){
int flg=1;
for(int c=0;c<4;c++)
flg&=(hsh[c][i]+hsh[c][j]+hsh[c][k])%mod[c]==goal[d][c];
ans+=flg;
}
printf("%d\n",ans);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 5880kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 455ms
memory: 40996kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: -100
Time Limit Exceeded
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...