Submission #877887

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
877887	2023-11-23 20:20:15	konber	T-Covering (eJOI19_covering)	C++14	30 / 100	60 ms	12124 KiB

covering

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#include <iostream>
#include <vector>
using namespace std;
vector<vector<int>> a, grid;
vector<pair<int, int>> sp;
int K, N, M;
int f(int x){
    if(x==K) return 0;
    int i=sp[x].first, j=sp[x].second;
    int s1=-1, s2=-1, s3=-1, s4=-1;
    if(i-1>=0 && i+1<M && j-1>=0){
        if(grid[i][j]+grid[i-1][j]+grid[i+1][j]+grid[i][j-1]==0){
            grid[i][j]=grid[i-1][j]=grid[i+1][j]=grid[i][j-1]=1;
            int d=f(x+1);
            if(d!=-1) s1 = a[i][j]+a[i-1][j]+a[i+1][j]+a[i][j-1]+d;
            grid[i][j]=grid[i-1][j]=grid[i+1][j]=grid[i][j-1]=0;
        }
    }
    if(i-1>=0 && i+1<M && j+1<N){
        if(grid[i][j]+grid[i-1][j]+grid[i+1][j]+grid[i][j+1]==0){
            grid[i][j]=grid[i-1][j]=grid[i+1][j]=grid[i][j+1]=1;
            int d=f(x+1);
            if(d!=-1) s2 = a[i][j]+a[i-1][j]+a[i+1][j]+a[i][j+1]+d;
            grid[i][j]=grid[i-1][j]=grid[i+1][j]=grid[i][j+1]=0;
        }
    }
    if(j-1>=0 && j+1<N && i+1<M){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

covering.cpp: In function 'int main()':
covering.cpp:51:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |     scanf("%d%d", &M, &N);
      |     ~~~~~^~~~~~~~~~~~~~~~
covering.cpp:56:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |             scanf("%d", &a[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~
covering.cpp:58:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |     scanf("%d", &K);
      |     ~~~~~^~~~~~~~~~
covering.cpp:61:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |         scanf("%d%d", &sp[i].first, &sp[i].second);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 15 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 30