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Submission #284751

# Submission time Handle Problem Language Result Execution time Memory
284751 2020-08-28T02:07:57 Z dantoh000 Red-blue table (IZhO19_stones) C++14
0 / 100
 90 ms 1912 KB 
#include <bits/stdc++.h>
using namespace std;
int ans[1005][1005];
int rct[1005];
int cct[1005];
int main(){
    int tc;
    scanf("%d",&tc);
    while (tc--){
        int n,m;
        scanf("%d%d",&n,&m);
        int flag = 0;
        if (n < m){
            flag = 1;
            swap(n,m);
        }
        for (int i = 0; i < n; i++) rct[i] = 0;
        for (int j = 0; j < m; j++) cct[j] = 0;
        for (int i = 0; i < n; i++){
            int num = (m-1)/2;
            for (int j = 0; j < m; j++){
                if ((i == n-1) || cct[j]+1 < n-cct[j]-1 && num){
                    cct[j]++;
                    num--;
                    rct[i]++;
                    ans[i][j] = 1;
                }
                else ans[i][j] = 0;
            }
        }
        int sum = 0;
        for (int i = 0; i < n; i++){
            if (rct[i] < m-rct[i]) sum++;
        }
        for (int i = 0; i < m; i++){
            if (cct[i] > n-cct[i]) sum++;
        }
        printf("%d\n",sum);
        if (flag){
            for (int i = 0; i < m; i++){
                for (int j = 0; j < n; j++){
                    printf("%c",ans[j][i]?'-':'+');
                }
                printf("\n");
            }
        }
        else{
            for (int i = 0; i < n; i++){
                for (int j = 0; j < m; j++){
                    printf("%c",ans[i][j]?'+':'-');
                }
                printf("\n");
            }
        }



    }

}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:22:57: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   22 |                 if ((i == n-1) || cct[j]+1 < n-cct[j]-1 && num){
      |                                   ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
stones.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |     scanf("%d",&tc);
      |     ~~~~~^~~~~~~~~~
stones.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Wrong answer in test 1 3: 2 < 3
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 512 KB in the table A+B is not equal to 46

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Wrong answer in test 1 3: 2 < 3
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 67 ms 1784 KB in the table A+B is not equal to 116
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 90 ms 1912 KB in the table A+B is not equal to 23
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Wrong answer in test 1 3: 2 < 3
2 Halted 0 ms 0 KB -