app.c: In function 'main':
app.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%d%d", &n, &m);
| ^~~~~~~~~~~~~~~~~~~~~
app.c:16:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | scanf("%d", &ww[i]);
| ^~~~~~~~~~~~~~~~~~~
app.c:18:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
18 | scanf("%d", &cc[i]);
| ^~~~~~~~~~~~~~~~~~~