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Recursion + memorized Search (DP). And apparently, the code below can be iterative with only 3 VARS-DP.classSolution {Unordered_mapint,BOOL>Cache; Public: BOOLGointN) {if(N 0)return false; if(N 3)return true; if(Cache.find (n) = =Cache.end ()) {Cache[n]=!go (N-1) || !go (N-2); } returnCache[n]; } /** * @param n:an integer * @return: A Boolean which equals to True if the first player would win*/ BOOLFirstwillwin (intN) {returngo (n); }};Lintcode "

Casual race1th name 100000 le beans2nd Name 8 0000 le beans3rd Name 5 0000 le beans4th Name 3 0000 le beans5th Name 1 0000 le beans第6-10 Name 5 the le beans第11-30 name le beans 17-Point Lucky Race1th name 100000 le beans2nd Name 8 0000 le beans3rd Name 5 0000 le beans4th Name 3 0000 le beans5th Name 1 0000 le beans第6-10 Name 5 the le beans第11-30 name le beans Point $10 call-out 1th name 1200 lottery 2nd name 400 lottery ticket 3rd na

#include#includeUsingnamespace Std;int arr[100066];int FIND (int L,int R,int aim)Binary lookup, from L to R, find aim{int mid;while (l2;if (Arr[mid]==aim)return mid;Find: Return coordinatesElseif (Arr[mid]1;else r=mid-1; }Return-1;Not found}int main () {int n,m; scanf"%d%d", n,m);Forint i=0; I"%d", arr[i]); Sort (arr,arr+n);Sorting before you can find it with two pointsfor (int i=0; iint x=find (i+1,n-1,m-arr[i]); //find the opposite number labeled I number, L from the beginning of the i+1 can b

#include#includeint harsh[1066];int main () {memset (HARSH,0,sizeof (HARSH));int n,m; scanf"%d%d", n,m);Forint i=0; Iint tmp; scanf"%d", tmp); ++HARSH[TMP]; }Forint i=0; i1066; ++i) {if (harsh[i]==0" //this number does not continue; if (harsh[m-i]>0) {if (i==m-i HARSH [I]2) //these two numbers are the same time, but only one is available, also not continue ; printf ( "%d%d" I,m-i ); //has ruled out the possibility of output, the conditions are satisfied on the output return 0;} printf ( Span cl

Split the coin.01 Backpack for SUM/2, SUM-2*DP[SUM/2]#include #include#includeusing namespacestd;intvalue[100000],dp[100000];intMain () {intN,m,sum,sum1; CIN>>N; while(n--) {cin>>m; Sum=0; for(intI=1; i) {cin>>Value[i]; Sum+=Value[i]; } sum1=sum/2; Memset (DP,0,sizeof(DP)); for(intI=1; i) for(intj=sum1;j>=value[i];j--) Dp[j]=max (dp[j],dp[j-value[i]]+Value[i]); cout2*dp[sum1]Endl; } return 0;}UVA 562 Dividing coins (01 backpack)

Idea: Brute force enumeration.#include #include#include#include#includeintMainvoid){ intT; scanf ("%d",t); while(t--) { intCNT =0 ; intn,m; scanf ("%d%d",n,m); for(inti =0; I ) for(intj =0; J ) for(intK =0; K ) if(i+2*j+5*k==mi+j+k==N) CNT++; printf ("%d\n", CNT); } return 0; }HDU2566 Statistics Coins

Topic Link http://vjudge.net/problem/19449Thinking of solving problemsUnlimited backpack ... To find the shortest circuit ...Code#include #includestring.h>#defineMax_size 310#defineMax_num 1E9structPoint {intx, y;};intDp[max_size][max_size];BOOLVis[max_size][max_size];p oint ecoin[ -];intMain () {inttests; intm, S; scanf ("%d", tests); while(tests--) {scanf ("%d%d", m, s); for(intI=0; i"%d%d", ecoin[i].x, ecoin[i].y); for(intI=0; i for(intj=0; jMax_num; memset (Vis,0,sizeof(VIS)); dp[0][0] =0

]+Wei); } } voidCompletepack (intCostintWei//completely{ inti; for(i = cost;i) {Dp[i]= Max (dp[i],dp[i-cost]+Wei); } } voidMultiplepack (intCostintWeiintCnt//multiple{ if(vCost ) {Completepack (Cost,wei); return ; } Else { intK =1; while(kCNT) {Zeroonepack (k*cost,k*Wei); CNT= cnt-K; K=2*K; } zeroonepack (CNT*cost,cnt*Wei); } } intMain () {intN; while(~SCANF ("%d%d", n,v), n+v) {inti; for(i =0; i) scanf ("%d",C[i]); for(i =0; i) scanf ("%d",W[

match!" 　　"Passers-by saw this scene, a face touched to say." "Yes, I see the way they quarrel, lovely, oh, should have been good!" 　　"Passers-by B also made a speech. 　　Ning smile Angry red Eye, ghost of match, these people blind off, obviously is this smelly man in strong kiss oneself Ah! 　　The first trick to prevent wolves! 　　Better laugh and laugh at the knee, toward the top of Liang crotch. It is the Liang pain to wake up, Ning smile this only mercilessly pushed him, turned to drill into t

, they are really good match!" 　　"Passers-by saw this scene, a face touched to say." "Yes, I see the way they quarrel, lovely, oh, should have been good!" 　　"Passers-by B also made a speech. 　　Ning smile Angry red Eye, ghost of match, these people blind off, obviously is this smelly man in strong kiss oneself Ah! 　　The first trick to prevent wolves! 　　Better laugh and laugh at the knee, toward the top of Liang crotch. It is the Liang pain to wake up, Ning smile this only mercilessly pushed him,

match!" 　　"Passers-by saw this scene, a face touched to say." "Yes, I see the way they quarrel, lovely, oh, should have been good!" 　　"Passers-by B also made a speech. 　　Ning smile Angry red Eye, ghost of match, these people blind off, obviously is this smelly man in strong kiss oneself Ah! 　　The first trick to prevent wolves! 　　Better laugh and laugh at the knee, toward the top of Liang crotch. It is the Liang pain to wake up, Ning smile this only mercilessly pushed him, turned to drill into t

#include #include #include #include #include #include #include #include #include #include #include #include using namespace STD;intMain () {int_,n,i,j,k,c1[305],c2[305]; while(~scanf("%d", n)) {if(n==0) Break; for(i=0; i1; c2[i]=0; } for(i=2; i*i for(j=0; j for(k=0; k+j for(j=0; j0; } }printf("%d\n", C1[n]); }return 0;} Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. HDU 1398 Square Coins