Submission #188576

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
188576	2020-01-13 09:17:37	knon0501	조개 줍기 (KOI17_shell)	C++14	0 / 100	218 ms	40796 KiB

shell

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#include <bits/stdc++.h>
using namespace std;
int n,nn;
int seg[1501][6000];
int a[1501][1501];
int dp[1501][1501];
int dy[1501][1501];
inline int f(int y,int x){
    int ret=0;
    for(int i=nn+x-1 ; i>=1 ; i/=2)ret+=seg[y][i];
    return ret;
}
void upd(int y,int l,int r,int lef,int rig,int lev,int k){
    if(l<=lef && rig<=r){
        seg[y][lev]+=k;
        return;
    }
    if(r<lef || l>rig)return;
    int mid=(lef+rig)/2;
    upd(y,l,r,lef,mid,lev*2,k);
    upd(y,l,r,mid+1,rig,lev*2+1,k);
}
int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    cin>>n;
    int i,j;
    for(i=1 ; i<=n ; i++)for(j=1 ; j<=n ; j++)cin>>a[i][j];
    for(i=1 ; i<=n ; i++)for(j=1 ; j<=n ; j++)dp[i][j]=max(dp[i-1][j],dp[i][j-1])+a[i][j];
 
 
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Compilation message (stderr)

shell.cpp: In function 'int main()':
shell.cpp:40:15: warning: unused variable 'ans2' [-Wunused-variable]
     long long ans2=ans;
               ^~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 34
• Subtask 3: 0 / 54