제출 #70486

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
70486		leehosu01	On grid (kriii2_O)	C++17	0 / 4	30 ms	2756 KiB

O

#pragma GCC optimize("-O3")
#include<bits/stdc++.h>
using namespace std;
long long MP[301][301],CR[301][301],BF[301][301],CG[302],BG[302],to;
int N,M;
int main()
{
    scanf("%d%d",&N,&M);
    int i,j,k;
    for(i=1;i<=N;i++)
        for(j=1;j<=M;j++)
            BF[i][j]=-(1ll<<40),scanf("%lld",MP[i]+j);
    CG[M+1]=BG[M+1]=-(1ll<<40);
    for(to=0,j=M;j;j--)BG[j]=BF[j][M]=to+=MP[N][j];
    for(i=N-1;i;i--,swap(CG,BG),swap(CR,BF))
        for(j=1;to=0,j<=M;j++)
            for(k=j;k<=M;k++)
                CG[j]=max(CG[j],CR[j][k]=max(BF[j][k],BG[k+1])+(to+=MP[i][k]));
    printf("%lld",BG[1]);
}

컴파일 시 표준 에러 (stderr) 메시지

O.cpp: In function 'int main()':
O.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&N,&M);
     ~~~~~^~~~~~~~~~~~~~
O.cpp:12:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             BF[i][j]=-(1ll<<40),scanf("%lld",MP[i]+j);
             ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 3