oj.uz

Submission #376245

# Submission time Handle Problem Language Result Execution time Memory
376245 2021-03-11T05:50:50 Z tqbfjotld Selotejp (COCI20_selotejp) C++14
110 / 110
 424 ms 82796 KB 
#include <bits/stdc++.h>
using namespace std;

bool used[1005][15];
int N,M;
int memo[1005][10][1030][2];

int func(int n, int pos, int bitm, bool c){
    if (pos==-1){
        pos = M-1;
        n--;
        if (c) return 999999999;
    }
    if (n<0){
        return bitm==0?0:999999999;
    }
    if (memo[n][pos][bitm][c]!=-1) return memo[n][pos][bitm][c];
    if ((bitm&(1<<pos))!=0 && used[n][pos]){
        return 999999999;
    }
    if (used[n][pos] && c){
        return 999999999;
    }
    if (used[n][pos]){
        return memo[n][pos][bitm][c] = func(n,pos-1,bitm,c);
    }
    if (c && (bitm&(1<<pos))!=0) return 999999999;
    int starthorz = 1+func(n,pos-1,bitm,false);
    int startvert = 1+func(n,pos-1,bitm&~(1<<pos),false);
    int usehorz = func(n,pos-1,bitm,true);
    int usevert = func(n,pos-1,bitm|(1<<pos),false);
    //printf("%d %d, %d %d %d %d\n",n,pos,starthorz,startvert,usehorz,usevert);
    if (c){
        return memo[n][pos][bitm][c] = min(starthorz,usehorz);
    }
    if (bitm&(1<<pos)){
        return memo[n][pos][bitm][c] = min(startvert, usevert);
    }
    return memo[n][pos][bitm][c] = min(min(starthorz, usehorz),min(startvert,usevert));

}

int main(){
    memset(memo,-1,sizeof(memo));
    scanf("%d%d",&N,&M);
    for (int x = 0; x<N; x++){
        for (int y = 0; y<M; y++){
            char c;
            scanf(" %c",&c);
            used[x][y] = c=='.';
        }
    }
    printf("%d",func(N,-1,0,false));
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:45:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |     scanf("%d%d",&N,&M);
      |     ~~~~~^~~~~~~~~~~~~~
Main.cpp:49:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   49 |             scanf(" %c",&c);
      |             ~~~~~^~~~~~~~~~

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 81388 KB Output is correct
2 Correct 50 ms 82688 KB Output is correct
3 Correct 49 ms 82284 KB Output is correct
4 Correct 49 ms 82540 KB Output is correct
5 Correct 54 ms 82540 KB Output is correct
6 Correct 53 ms 82540 KB Output is correct
7 Correct 53 ms 82540 KB Output is correct
8 Correct 46 ms 82540 KB Output is correct
9 Correct 49 ms 82540 KB Output is correct
10 Correct 77 ms 82796 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 81388 KB Output is correct
2 Correct 44 ms 81388 KB Output is correct
3 Correct 53 ms 81388 KB Output is correct
4 Correct 46 ms 81388 KB Output is correct
5 Correct 44 ms 81388 KB Output is correct
6 Correct 43 ms 81388 KB Output is correct
7 Correct 45 ms 81388 KB Output is correct
8 Correct 44 ms 81388 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 81388 KB Output is correct
2 Correct 50 ms 82688 KB Output is correct
3 Correct 49 ms 82284 KB Output is correct
4 Correct 49 ms 82540 KB Output is correct
5 Correct 54 ms 82540 KB Output is correct
6 Correct 53 ms 82540 KB Output is correct
7 Correct 53 ms 82540 KB Output is correct
8 Correct 46 ms 82540 KB Output is correct
9 Correct 49 ms 82540 KB Output is correct
10 Correct 77 ms 82796 KB Output is correct
11 Correct 44 ms 81388 KB Output is correct
12 Correct 44 ms 81388 KB Output is correct
13 Correct 53 ms 81388 KB Output is correct
14 Correct 46 ms 81388 KB Output is correct
15 Correct 44 ms 81388 KB Output is correct
16 Correct 43 ms 81388 KB Output is correct
17 Correct 45 ms 81388 KB Output is correct
18 Correct 44 ms 81388 KB Output is correct
19 Correct 45 ms 82028 KB Output is correct
20 Correct 51 ms 82412 KB Output is correct
21 Correct 57 ms 82540 KB Output is correct
22 Correct 53 ms 82540 KB Output is correct
23 Correct 47 ms 82540 KB Output is correct
24 Correct 49 ms 82540 KB Output is correct
25 Correct 62 ms 82540 KB Output is correct
26 Correct 131 ms 82540 KB Output is correct
27 Correct 267 ms 82668 KB Output is correct
28 Correct 424 ms 82668 KB Output is correct