Submission #7475210

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Source Code Expand

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#define MINDIFF 2.25e-308                   // use for convergence check

double sqroot(double square)
{
    double root=square/3, last, diff=1;
    if (square <= 0) return 0;
    do {
        last = root;
        root = (root + square / root) / 2;
        diff = root - last;
    } while (diff > MINDIFF || diff < -MINDIFF);
    return root;
}

double dist(int x1, int x2, int y1, int y2) {
    return sqroot((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
}

int main(void) {
    int txa, tya, txb, tyb, T, V, n;
    scanf("%d %d %d %d %d %d", &txa, &tya, &txb, &tyb, &T, &V);
    scanf("%d", &n);

    int *x = (int*)malloc(n * sizeof(int));
    int *y = (int*)malloc(n * sizeof(int));
    int i;
    for(i=0; i<n; i++) {
        scanf("%d %d", &x[i], &y[i]);
    }

    for(i=0; i<n; i++) {
        if(dist(txa, x[i], tya, y[i]) / (double)V + dist(txb, x[i], tyb, y[i]) / (double)V <= T) {
            printf("YES\n");
            return 0;
        }
    }
    printf("NO\n");
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:24:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d %d %d %d", &txa, &tya, &txb, &tyb, &T, &V);
     ^
./Main.c:25:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ^
./Main.c:31:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &x[i], &y[i]);
         ^

Judge Result