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Submission #837473

# Submission time Handle Problem Language Result Execution time Memory
837473 2023-08-25T11:13:46 Z EntityPlantt Planine (COCI21_planine) C++14
0 / 110
 2 ms 468 KB 
#include <cstdio>
int n, h, i, c;
double st[500005], en[500005], x1, y1, x2, y2, x3, y3, l = -1e9;
int main() {
    scanf("%d%d%lf%lf%lf%lf", &n, &h, &x3, &y3, &x3, &y3);
    if (n == 3) {
        printf("0");
        return 0;
    }
    n = n / 2 - 1;
    for (i = 0; i < n; i++) {
        x1 = x3; y1 = y3;
        scanf("%lf%lf%lf%lf", &x2, &y2, &x3, &y3);
        st[i] = x1 + (h - y1) * (x1 - x2) / (y1 - y2);
        en[i] = x2 + (h - y2) * (x2 - x3) / (y2 - y3);
    }
    for (i = 0; i < n; i++) {
        if (l < st[i]) {
            l = en[i];
            c++;
        }
    }
    printf("%d", c);
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:5:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 |     scanf("%d%d%lf%lf%lf%lf", &n, &h, &x3, &y3, &x3, &y3);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%lf%lf%lf%lf", &x2, &y2, &x3, &y3);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 468 KB Output isn't correct
2 Halted 0 ms 0 KB -