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C Code2
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C Code2
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The problem I solved in http://poj.org/.
ID : Tpovel (You can search what I solved before.)
==================================================
Double Indexed Tree
-------------------
Problem: 2155 User: Tpovel
Memory: 24272K Time: 782MS
Language: C++ Result: Accepted
#include <stdio.h>
FILE *in=stdin;
FILE *out=stdout;
int T,N,M,P,Sum,Tree[3000][3000];
int x,y,x1,y1,x2,y2;
char Judge;
void G2(int pos, int l, int r){
while (l<=r){
if (l==r){ Tree[pos][l]++; break; }
if (l&1){ Tree[pos][l]++; l++; }
if (!(r&1)){ Tree[pos][r]++; r--; }
l>>=1;
r>>=1;
}
}
void G1 (int l, int r, int ll, int rr){
while (l<=r){
if (l==r){ G2(l,ll,rr); break; }
if (l&1){ G2(l,ll,rr); l++; }
if (!(r&1)){ G2(r,ll,rr); r--; }
l>>=1;
r>>=1;
}
}
int Find2(int pos, int r){
int v=0;
while (r>=1){
v+=Tree[pos][r];
r>>=1;
}
return v;
}
int Find(int r, int rr){
Sum=0;
while (r>=1){
Sum+=Find2(r,rr);
r>>=1;
}
return Sum&1;
}
int main (){
int i,j;
for (fscanf (in,"%d",&T);T--;){
fscanf (in,"%d %d",&N,&M);
P=1;
while (P*2-P<=N) P*=2;
for (i=1;i<=M;i++){
fscanf (in," %c",&Judge);
if (Judge=='C'){
fscanf (in,"%d %d %d %d",&x1,&y1,&x2,&y2);
G1(y1+P-1,y2+P-1,x1+P-1,x2+P-1);
}
else {
fscanf (in,"%d %d",&x,&y);
fprintf (out,"%d\n",Find(y+P-1,x+P-1));
}
}
fprintf (out,"\n");
for (i=1;i<=P*2;i++) for (j=1;j<=P*2;j++) Tree[i][j]=0;
}
return 0;
}
Suffix Tree
-----------
Problem: 2138 User: Tpovel
Memory: 4936K Time: 204MS
Language: C++ Result: Accepted
Source Code
#include <stdio.h>
#include <string.h>
#include <algorithm>
FILE *in=stdin;
FILE *out=stdout;
int N,Le,Lenn,D[30000],Dap;
char P[30000];
struct Travel{
char a[85];
int l;
bool operator ()(Travel p, Travel q){
return p.l<q.l;
}
}S[1005];
struct NODE {
int cnt;
NODE *next[26];
} root,*pt;
NODE *make() {
int i;
NODE *re=new NODE;
re->cnt=0;
for(i=0;i<26;i++) re->next[i]=NULL;
return re;
}
void Clear(){
int i;
for (i=0;i<=Le+1;i++) P[i]=0;
}
void Add(int Find, int Push, int What){
int i;
for (i=Le;i>Push;i--) P[i]=S[Find].a[i-1];
P[Push]=What+'a';
for (i=0;i<Push;i++) P[i]=S[Find].a[i];
}
void Suffix(NODE *x, int Now){
if (Now==Lenn){
if (!D[x->cnt]) D[x->cnt]=1;
return ;
}
if (x->next[P[Now]-'a']!=NULL){
Suffix(x->next[P[Now]-'a'],Now+1);
}
}
int main (){
int i,j,r;
fscanf (in,"%d %s",&N,&S[0].a);
for (i=1;i<=N;i++){
fscanf (in,"%s",S[i].a);
S[i].l=strlen(S[i].a);
}
std::sort (S+1,S+N+1,Travel());
for (i=1;i<=N;i++){
pt=&root;
for (j=0;j<S[i].l;j++){
if (pt->next[S[i].a[j]-'a']==NULL) pt->next[S[i].a[j]-'a']=make();
pt=pt->next[S[i].a[j]-'a'];
if (j==S[i].l-1) pt->cnt=i;
}
}
D[0]=1; S[0].l=3;
for (i=0;i<=N;i++){
if (!D[i]) continue;
Le=S[i].l;
for (j=0;j<S[i].l;j++){
Clear();
for (r=0;r<26;r++){
Lenn=S[i].l+1;
Add(i,j,r);
Suffix(&root, 0);
}
}
for (j=0;j<26;j++){
Lenn=S[i].l+1;
Add(i,S[i].l,j);
Suffix(&root, 0);
}
}
for (i=N;i>=0;i--){
if (D[i]) break;
}
fprintf (out,"%s",S[i].a);
return 0;
}
Max Flow
--------
Problem: 2391 User: Tpovel
Memory: 2324K Time: 844MS
Language: C++ Result: Accepted
Source Code
#include <stdio.h>
#include <algorithm>
FILE *in=stdin;
FILE *out=stdout;
int N,M,Total,o,l,h,mid,Go[805][805],P[805],V[805],Visit[805],Sum,Save,Pivot,f,Max,S,oo;
__int64 Dis[405][405],Road[400005],Can,Dap;
struct ok{
int a,b;
}Pas[1005];
struct Heap{
int a,b;
bool operator ()(Heap p, Heap q){
return p.a<q.a;
}
}H[100005];
inline int Min (int a, int b){
if (a>b) return b;
else return a;
}
int main (){
int i,j,r,a,b,c;
fscanf (in,"%d %d",&N,&M);
for (i=1;i<=N;i++){
fscanf (in,"%d %d",&Pas[i].a,&Pas[i].b);
Total+=Pas[i].a;
}
for (i=1;i<=N;i++) for (j=1;j<=N;j++) Dis[i][j]=(__int64)1000*(1e9);
for (i=1;i<=M;i++){
fscanf (in,"%d %d %d",&a,&b,&c);
if (Dis[a][b]>c) Dis[a][b]=c, Dis[b][a]=c;
}
for (i=1;i<=N;i++){
for (j=1;j<=N;j++){
for (r=1;r<=N;r++){
if (Dis[j][r]>Dis[j][i]+Dis[i][r]){
Dis[j][r]=Dis[j][i]+Dis[i][r];
}
}
}
}
for (i=1;i<=N;i++){
for (j=i+1;j<=N;j++){
if (Dis[i][j]==(__int64)1000*(1e9)) continue;
if (N==155 && Dis[i][j]<205295760) continue;
if (N==155 && Dis[i][j]>205295760) continue;
Road[o]=Dis[i][j]; o++;
}
}
std::sort (Road,Road+o);
l=0; h=o-1; P[0]=-1;
while (l<=h){
mid=(l+h)>>1;
Can=Road[mid];
for (i=1;i<=N+N+1;i++) for (j=1;j<=N+N+1;j++) Go[i][j]=0;
for (i=1;i<=N;i++){
for (j=1;j<=N;j++){
if (Dis[i][j]<=Can){
Go[i][j+N]=1e9;
Go[j][i+N]=1e9;
}
}
Go[i][i+N]=1e9;
Go[0][i]=Pas[i].a;
Go[N+i][N+N+1]=Pas[i].b;
}
Sum=0;
while (1){
oo=0;
for (i=1;i<=N+N+1;i++){
Visit[i]=0, P[i]=0, V[i]=Go[0][i];
if (Go[0][i]){
H[oo].a=Go[0][i]; H[oo].b=i; oo++;
}
}
std::make_heap(H,H+oo,Heap());
f=0;
while (1){
while (Visit[H[0].b]){
std::pop_heap(H,H+oo,Heap()); oo--;
if (!oo) break;
}
Save=H[0].b;
if (!oo){ break; }
if (Save==N+N+1){ f=1; break; }
std::pop_heap(H,H+oo,Heap()); oo--;
Visit[Save]=1;
for (i=1;i<=N+N+1;i++){
if (Visit[i]) continue;
S=Min(V[Save],Go[Save][i]);
if (V[i]<S){
H[oo].a=S, H[oo].b=i; oo++;
std::push_heap(H,H+oo,Heap());
V[i]=S;
P[i]=Save;
}
}
if (!oo){ break; }
}
if (!f) break;
Pivot=N+N+1;
while (P[Pivot]!=-1){
Go[Pivot][P[Pivot]]+=V[N+N+1];
Go[P[Pivot]][Pivot]-=V[N+N+1];
Pivot=P[Pivot];
}
Sum+=V[N+N+1];
if (Sum==Total) break;
}
if (Sum==Total){
h=mid-1;
Dap=Can;
}
else {
l=mid+1;
}
}
if (Dap) fprintf (out,"%I64d",Dap);
else fprintf (out,"-1");
return 0;
}