oj.uz

Submission #286210

# Submission time Handle Problem Language Result Execution time Memory
286210 2020-08-30T08:25:10 Z SomeoneUnknown Red-blue table (IZhO19_stones) C++14
100 / 100
 9 ms 2304 KB 
#include <bits/stdc++.h>
using namespace std;

int main(){
    int T;
    scanf("%d", &T);
    for(int t = 0; t < T; ++t){
        int r, c;
        scanf("%d %d", &r, &c);
        /*if(r == 2 && c == 1){
            printf("2\n+\n+\n");
            continue;
        }//*/
        char ans[r][c+1];
        for(int i = 0; i < r; ++i){
            ans[i][c] = '\0';
        }
        if(r > c){
            for(int i = 0; i < r; ++i){
                for(int j = 0; j < c; ++j){
                    ans[i][j] = '+';
                }
            }
            long long bestaddi = (long long) r * (((long long) c - 1) / 2) / (((long long) r) / 2 + 1);
            long long cur = 0;
            for(int i = 0; i < r; ++i){
                for(int j = 0; j < (c - 1) / 2; ++j){
                    ans[i][cur] = '-';
                    cur++;
                    cur %= bestaddi;
                }
            }
            printf("%lld\n", r+bestaddi);
            for(int i = 0; i < r; ++i){
                printf("%s\n", ans[i]);
            }
        }else{
            for(int i = 0; i < r; ++i){
                for(int j = 0; j < c; ++j){
                    ans[i][j] = '-';
                }
            }
            long long bestaddi = (long long) c * (((long long) r - 1) / 2) / (((long long) c) / 2 + 1);
            long long cur = 0;
            for(int i = 0; i < c; ++i){
                for(int j = 0; j < (r - 1) / 2; ++j){
                    ans[cur][i] = '+';
                    cur++;
                    cur %= bestaddi;
                }
            }
            printf("%lld\n", c+bestaddi);
            for(int i = 0; i < r; ++i){
                printf("%s\n", ans[i]);
            }
        }
    }
}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |     scanf("%d", &T);
      |     ~~~~~^~~~~~~~~~
stones.cpp:9:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |         scanf("%d %d", &r, &c);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 372 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 384 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1408 KB Output is correct
2 Correct 6 ms 1920 KB Output is correct
3 Correct 6 ms 1920 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1280 KB Output is correct
2 Correct 6 ms 1664 KB Output is correct
3 Correct 5 ms 1408 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 9 ms 1408 KB Output is correct
6 Correct 6 ms 1920 KB Output is correct
7 Correct 6 ms 1920 KB Output is correct
8 Correct 7 ms 1280 KB Output is correct
9 Correct 6 ms 1664 KB Output is correct
10 Correct 5 ms 1408 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 5 ms 1536 KB Output is correct
13 Correct 5 ms 1408 KB Output is correct
14 Correct 4 ms 1152 KB Output is correct
15 Correct 7 ms 2304 KB Output is correct
16 Correct 6 ms 1784 KB Output is correct
17 Correct 3 ms 1024 KB Output is correct