Submission #1176482


Source Code Expand

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,int> plli;
typedef pair<int,pii> pipii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<pii> vpii;
 
#define rep(i,n) for (int i=0;i<(n);i++)
#define rep2(i,a,b) for (int i=(a);i<(b);i++)
#define rrep(i,n) for (int i=(n);i>=0;i--)
#define rrep2(i,a,b) for (int i=(a);i>b;i--)
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(a) (a).begin(),(a).end()
 
const int mod = 1e9 + 7;
const ll INF = 1<<30;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
 
int n,k;
int ldp[5005][5005];
int rdp[5005][5005];
 
int main(){
    scanf("%d%d",&n,&k);
    vi a(n);
    rep(i,n) scanf("%d",&a[i]);
    rep(i,n){
        ldp[i][0]=1;rdp[i][0]=1;
        if (a[i]<k) ldp[i][a[i]]=1;
        if (a[n-1-i]<k) rdp[i][a[n-1-i]]=1;
    }
    rep2(i,1,n)rep(j,k){
            if (j-a[i]>=0) ldp[i][j]=ldp[i-1][j-a[i]]||ldp[i-1][j];
            else ldp[i][j]|=ldp[i-1][j];
            if (j-a[n-1-i]>=0) rdp[i][j]=rdp[i-1][j-a[n-1-i]]||rdp[i-1][j];
            else rdp[i][j]|=rdp[i-1][j];
    }
    rep(i,n)rep2(j,1,k){
        rdp[i][j]+=rdp[i][j-1];
    }
    int cnt=0;
    int lnum=0;
    rep(i,n){
        if (k-a[i]<=0){
            cnt+=1;
            continue;
        }
        rep(j,k){
            if (i==0) lnum=0;
            else if (i==n-1){
                if (ldp[i-1][j] && a[i]+j>=k){
                    cnt+=1;
                    break;
                }
                continue;
            }
            else{
                if (ldp[i-1][j]) lnum=j;
                else continue;
            }
            if (k-a[i]-lnum<=0){
                cnt+=1;
                break;
            }
            if (rdp[n-2-i][k-1-lnum]-rdp[n-2-i][k-a[i]-lnum-1]){
                cnt+=1;
                break;
            }
        }
    }
    cout << n-cnt << endl;
    return 0;
}

Submission Info

Submission Time
Task D - No Need
User roto_37
Language C++14 (GCC 5.4.1)
Score 600
Code Size 2095 Byte
Status AC
Exec Time 197 ms
Memory 195840 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:34:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&k);
                        ^
./Main.cpp:36:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     rep(i,n) scanf("%d",&a[i]);
                               ^

Judge Result

Set Name Sample Subtask All
Score / Max Score 0 / 0 300 / 300 300 / 300
Status
AC × 3
AC × 26
AC × 51
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt
Subtask 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 2_026.txt, 2_027.txt, 2_028.txt, 2_029.txt, 2_030.txt, 2_031.txt, 2_032.txt, 2_033.txt, 2_034.txt, 2_035.txt, 2_036.txt, 2_037.txt, 2_038.txt, 2_039.txt, 2_040.txt, 2_041.txt, 2_042.txt, 2_043.txt, 2_044.txt, 2_045.txt, 2_046.txt, 2_047.txt, 2_048.txt, 2_049.txt, 2_050.txt
Case Name Status Exec Time Memory
0_000.txt AC 2 ms 2304 KB
0_001.txt AC 2 ms 2304 KB
0_002.txt AC 2 ms 2304 KB
1_003.txt AC 2 ms 2304 KB
1_004.txt AC 2 ms 2304 KB
1_005.txt AC 2 ms 2304 KB
1_006.txt AC 2 ms 2432 KB
1_007.txt AC 2 ms 2432 KB
1_008.txt AC 5 ms 17280 KB
1_009.txt AC 6 ms 17280 KB
1_010.txt AC 5 ms 17280 KB
1_011.txt AC 5 ms 17024 KB
1_012.txt AC 5 ms 17280 KB
1_013.txt AC 5 ms 17024 KB
1_014.txt AC 4 ms 17024 KB
1_015.txt AC 5 ms 17280 KB
1_016.txt AC 2 ms 2304 KB
1_017.txt AC 2 ms 2304 KB
1_018.txt AC 2 ms 2304 KB
1_019.txt AC 5 ms 17152 KB
1_020.txt AC 4 ms 17024 KB
1_021.txt AC 5 ms 17152 KB
1_022.txt AC 3 ms 8960 KB
1_023.txt AC 3 ms 8832 KB
1_024.txt AC 5 ms 17152 KB
1_025.txt AC 5 ms 17152 KB
2_026.txt AC 2 ms 2304 KB
2_027.txt AC 2 ms 2432 KB
2_028.txt AC 2 ms 2432 KB
2_029.txt AC 181 ms 195840 KB
2_030.txt AC 197 ms 195840 KB
2_031.txt AC 137 ms 195840 KB
2_032.txt AC 39 ms 193408 KB
2_033.txt AC 136 ms 195840 KB
2_034.txt AC 39 ms 193408 KB
2_035.txt AC 39 ms 193408 KB
2_036.txt AC 142 ms 195840 KB
2_037.txt AC 2 ms 2560 KB
2_038.txt AC 2 ms 2560 KB
2_039.txt AC 2 ms 2560 KB
2_040.txt AC 119 ms 195840 KB
2_041.txt AC 94 ms 195072 KB
2_042.txt AC 123 ms 195840 KB
2_043.txt AC 76 ms 125184 KB
2_044.txt AC 89 ms 169856 KB
2_045.txt AC 60 ms 161152 KB
2_046.txt AC 103 ms 194944 KB
2_047.txt AC 137 ms 195712 KB
2_048.txt AC 165 ms 195840 KB
2_049.txt AC 158 ms 195840 KB
2_050.txt AC 155 ms 195840 KB