#include <math.h>
#include <stdio.h>
#define N 150000
int main() {
static int xx[N + 1], yy[N], ll[N], rr[N], pp[N], qu[N], dd[N], kk[N];
int n, k, cnt, i, j, lower, upper, x, area;
double t;
scanf("%d%*d%*d", &n), n = n / 2 - 1;
xx[0] = 0;
for (i = 0; i < n; i++)
scanf("%*d%*d%d%d", &xx[i + 1], &yy[i]);
scanf("%*d%*d");
cnt = 0;
for (i = 0; i < n; i++) {
while (cnt && yy[qu[cnt - 1]] > yy[i])
cnt--;
ll[i] = cnt == 0 ? -1 : qu[cnt - 1];
qu[cnt++] = i;
}
cnt = 0;
for (i = n - 1; i >= 0; i--) {
while (cnt && yy[qu[cnt - 1]] >= yy[i])
cnt--;
rr[i] = cnt == 0 ? n : qu[cnt - 1];
qu[cnt++] = i;
}
for (i = 0; i < n; i++) {
pp[i] = rr[i] == n || ll[i] != -1 && yy[ll[i]] > yy[rr[i]] ? ll[i] : rr[i];
if (pp[i] != -1)
dd[pp[i]]++;
}
scanf("%d", &k);
while (k--) {
scanf("%d%*d%*d%*d", &x);
lower = 0, upper = n;
while (upper - lower > 1) {
i = (lower + upper) / 2;
if (xx[i] <= x)
lower = i;
else
upper = i;
}
kk[lower]++;
}
for (i = 0; i < n; i++) {
j = i;
while (pp[j] != -1 && dd[j] == 0)
kk[pp[j]] += kk[j], dd[pp[j]]--, j = pp[j];
}
t = 0, area = 0;
for (i = 0; i < n; i++)
if (kk[i] > 0)
t += (double) (xx[rr[i]] - xx[ll[i] + 1]) * (yy[i] - yy[pp[i]]) / kk[i];
else
area += (long long) (xx[rr[i]] - xx[ll[i] + 1]) * (yy[i] - yy[pp[i]]);
printf("%.2f\n", round(t * 1000) / 1000);
printf("%d\n", area);
return 0;
}
Compilation message
aqua2.c: In function 'main':
aqua2.c:31:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
31 | pp[i] = rr[i] == n || ll[i] != -1 && yy[ll[i]] > yy[rr[i]] ? ll[i] : rr[i];
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
aqua2.c:11:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | scanf("%d%*d%*d", &n), n = n / 2 - 1;
| ^~~~~~~~~~~~~~~~~~~~~
aqua2.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%*d%*d%d%d", &xx[i + 1], &yy[i]);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
aqua2.c:15:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
15 | scanf("%*d%*d");
| ^~~~~~~~~~~~~~~
aqua2.c:35:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
35 | scanf("%d", &k);
| ^~~~~~~~~~~~~~~
aqua2.c:37:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
37 | scanf("%d%*d%*d%*d", &x);
| ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cci4daWW.o: in function `main':
aqua2.c:(.text.startup+0x3a1): undefined reference to `round'
collect2: error: ld returned 1 exit status
