oj.uz

Submission #55780

# Submission time Handle Problem Language Result Execution time Memory
55780 2018-07-09T03:12:11 Z red1108 None (KOI17_shell) C++17
0 / 100
 207 ms 22700 KB 
#include <iostream>
#include <stdio.h>
using namespace std;
int dp[1600][1600], seg[1600][6000], input[1600][1600];
int n, si=1,ans;
int query(int x, int y)
{
    int ret=0;
    y=y+si-1;
    while(y){ret+=seg[x][y];y/=2;}
    return ret;
}
void gang(int x, int v, int l, int r, int s, int e, int t)
{
    if(l>r||e<l||r<s) return ;
    if(s<=l&&r<=e) {seg[x][v]+=t;return ;}
    gang(x,v*2,l,(l+r)/2,s,e,t);
    gang(x,v*2+1,((l+r)/2)+1,r,s,e,t);
}
int main()
{
    int i, j,k,inx,iny,s,e,d;
    char ina;
    cin>>n;
    while(si<n) si*=2;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
        {
            scanf("%d", &input[i][j]);
            dp[i][j]=max(dp[i-1][j],dp[i][j-1])+input[i][j];
            ans=ans+dp[i][j];
        }
    }
    printf("%d\n", ans);
    for(k=1;k<=n;k++)
    {
        scanf("\n%c %d %d",&ina,&inx,&iny);
        if(ina=='U') d=1;
        else d=-1;
        s=iny;
        for(i=iny+1;i<=n;i++)
        {
            if(max(dp[inx-1][i]+query(inx-1,i),dp[inx][i-1]+query(inx,i-1)+d)==dp[inx][i-1]+query(inx,i-1)+d) continue;
            else break;
        }
        e=i-1;
        gang(inx,1,1,si,s,e,d);
        ans=ans+(e-s+1)*d;
        for(i=inx+1;i<=n;i++)
        {
            while(max(dp[i-1][s]+query(i-1,s),dp[i][s-1]+query(i,s-1))==dp[i][s-1]+query(i,s-1)) s++;
            if(s>e) break;
            for(j=e+1;j<=n;j++)
            {
                if(max(dp[i-1][j]+query(i-1,j),dp[i][j-1]+query(i,j-1)+d)!=dp[i][j-1]+query(i,j-1)+d) break;
            }
            e=j-1;
            if(s>e) break;
            gang(i,1,1,si,s,e,d);
            ans=ans+(e-s+1)*d;
        }
        printf("%d\n", ans);
    }
}

Compilation message

shell.cpp: In function 'int main()':
shell.cpp:30:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &input[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~~~~~
shell.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("\n%c %d %d",&ina,&inx,&iny);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1656 KB Output is correct
2 Incorrect 4 ms 1656 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 34.0

# Verdict Execution time Memory Grader output
1 Incorrect 207 ms 22700 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1656 KB Output is correct
2 Incorrect 4 ms 1656 KB Output isn't correct
3 Halted 0 ms 0 KB -