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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#200729 | #5116. Contests | A_zjzj | WA | 71ms | 36608kb | C++14 | 2.3kb | 2023-10-04 19:09:41 | 2023-10-04 19:09:43 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
template<typename T>
ostream& operator << (ostream &out,const vector<T>&x){
if(x.empty())return out<<"[]";
out<<'['<<x[0];
for(int len=x.size(),i=1;i<len;i++)out<<','<<x[i];
return out<<']';
}
template<typename T>
vector<T> ary(const T *a,int l,int r){
return vector<T>{a+l,a+1+r};
}
template<typename T>
void debug(T x){
cerr<<x<<'\n';
}
template<typename T,typename ...S>
void debug(T x,S ...y){
cerr<<x<<' ',debug(y...);
}
const int N=1e5+10,M=5,K=__lg(N)+2;
int n,m,q,a[M][N],b[M][N];
int c[M][N][M],f[K][N][M];
int main(){
scanf("%d%d",&n,&m);
for(int i=0;i<m;i++){
for(int j=1;j<=n;j++){
scanf("%d",&a[i][j]),b[i][a[i][j]]=j;
}
debug("a",ary(a[i],1,n));
debug("b",ary(b[i],1,n));
}
for(int i=0;i<m;i++){
fill(c[i][n+1],c[i][n+1]+m,n+1);
for(int j=n;j>=1;j--){
for(int k=0;k<m;k++){
c[i][j][k]=min(c[i][j+1][k],b[k][a[i][j]]);
}
debug("c",i,j,ary(c[i][j],0,m-1));
}
}
for(int u=1;u<=n;u++){
for(int j=0;j<m;j++){
f[0][u][j]=n+1;
for(int k=0;k<m;k++){
f[0][u][j]=min(f[0][u][j],c[k][b[k][u]][j]);
}
}
}
for(int i=1;(1<<i)<=n;i++){
for(int u=1;u<=n;u++){
for(int j=0;j<m;j++){
f[i][u][j]=n+1;
for(int k=0;k<m;k++){
f[i][u][j]=min(f[i][u][j],f[i-1][b[k][f[i-1][u][k]]][j]);
}
}
}
}
for(int i=0;(1<<i)<=n;i++){
for(int u=1;u<=n;u++){
debug("f",i,u,ary(f[i][u],0,m-1));
}
}
scanf("%d",&q);
for(int s,t;q--;){
scanf("%d%d",&s,&t);
auto chk1=[&](){
for(int i=0;i<m;i++){
if(b[i][s]<b[i][t])return 1;
}
return 0;
};
if(chk1()){
puts("1");continue;
}
int now[M]={0,0,0,0,0};
for(int i=0;i<m;i++)now[i]=b[i][s];
int ans=0;
for(int i=__lg(n);~i;i--){
int nex[M]={0,0,0,0,0};
fill(nex,nex+m,n+1);
for(int j=0;j<m;j++){
for(int k=0;k<m;k++){
nex[k]=min(nex[k],f[i][a[j][now[j]]][k]);
}
}
auto chk2=[&](){
for(int j=0;j<m;j++){
if(nex[j]<=b[j][t])return 1;
}
return 0;
};
if(!chk2()){
ans+=1<<i;
copy(nex,nex+m,now);
}
}
auto chk3=[&](){
for(int i=0;i<m;i++){
for(int j=0;j<m;j++){
if(f[0][a[i][now[i]]][j]<=b[j][t])return 1;
}
}
return 0;
};
printf("%d\n",chk3()?ans+2:-1);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 16088kb
input:
6 2 1 3 2 5 4 6 2 1 4 3 6 5 4 1 4 5 3 6 1 5 2
output:
1 2 5 3
result:
ok 4 number(s): "1 2 5 3"
Test #2:
score: -100
Wrong Answer
time: 71ms
memory: 36608kb
input:
998 5 1 2 6 3 4 5 7 11 8 9 14 12 13 10 15 16 18 19 20 17 23 22 21 26 24 25 27 29 30 28 32 31 34 33 37 38 39 35 40 36 41 43 42 46 44 48 45 47 51 49 50 56 52 57 53 54 55 62 58 59 63 64 60 65 66 61 67 69 70 68 71 73 74 75 72 78 77 79 82 76 81 85 84 80 86 87 83 88 90 91 89 92 96 98 94 95 97 101 93 103 1...
output:
54 -1 1 1 1 14 1 -1 -1 1 13 -1 -1 1 1 1 43 1 1 1 1 -1 1 22 -1 1 1 1 -1 54 1 1 -1 23 19 34 1 1 1 1 1 1 1 1 -1 -1 -1 1 1 106 -1 1 1 80 1 1 -1 1 -1 1 1 1 -1 48 1 1 -1 22 -1 1 1 12 -1 1 1 1 -1 -1 -1 1 18 -1 -1 -1 99 1 -1 -1 1 1 1 31 -1 -1 17 64 -1 1 -1 1 1 2 1 1 1 9 -1 1 -1 1 40 -1 71 -1 1 1 5 1 -1 85 9...
result:
wrong answer 1st numbers differ - expected: '94', found: '54'