oj.uz

Submission #408720

# Submission time Handle Problem Language Result Execution time Memory
408720 2021-05-19T14:31:25 Z ly20 Inside information (BOI21_servers) C++17
5 / 100
 90 ms 3924 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 121234;
int v[MAXN];
int main() {
    int n, k;
    scanf("%d %d", &n, &k);
    k += n - 1;
    for(int i = 1; i <= n; i++) v[i] = -1;
    int id = 0;
    v[1] = 0;
    id++;
    for(int i = 0; i < k; i++) {
        char c;
        scanf(" %c", &c);
        if(c == 'S') {
            int a, b;
            scanf("%d %d", &a, &b);
            if(a != 1) swap(a, b);
            v[b] = id++;
        }
        else if(c == 'Q') {
            int a, b;
            scanf("%d %d", &a, &b);
            if(a == b) printf("yes\n");
            else if(v[b] == -1 || v[a] == -1 ) printf("no\n");
            else if(v[a] > v[b] || (a == 1 && v[b] != 0)) printf("yes\n");
            else printf("no\n");
        }
        else {
            int a;
            scanf("%d", &a);
            if(v[a] == -1) printf("1\n");
            else if(a != 1) printf("%d\n", id - v[a] + 1);
            else printf("%d\n", id - v[a]);
        }
    }
}

Compilation message

servers.cpp: In function 'int main()':
servers.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
servers.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf(" %c", &c);
      |         ~~~~~^~~~~~~~~~~
servers.cpp:18:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |             scanf("%d %d", &a, &b);
      |             ~~~~~^~~~~~~~~~~~~~~~~
servers.cpp:24:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |             scanf("%d %d", &a, &b);
      |             ~~~~~^~~~~~~~~~~~~~~~~
servers.cpp:32:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |             scanf("%d", &a);
      |             ~~~~~^~~~~~~~~~

Subtask #1
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 49 ms 580 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 49 ms 580 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 38 ms 552 KB Output is correct
2 Correct 86 ms 3904 KB Output is correct
3 Correct 88 ms 3924 KB Output is correct

Subtask #4
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 38 ms 552 KB Output is correct
2 Correct 86 ms 3904 KB Output is correct
3 Correct 88 ms 3924 KB Output is correct
4 Correct 38 ms 724 KB Output is correct
5 Correct 90 ms 3880 KB Output is correct
6 Correct 78 ms 3132 KB Output is correct
7 Correct 75 ms 3272 KB Output is correct

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 40 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 40 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 38 ms 616 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 38 ms 616 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 12.5

# Verdict Execution time Memory Grader output
1 Incorrect 38 ms 580 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 12.5

# Verdict Execution time Memory Grader output
1 Incorrect 38 ms 580 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 17.5

# Verdict Execution time Memory Grader output
1 Incorrect 39 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 17.5

# Verdict Execution time Memory Grader output
1 Incorrect 39 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -