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#include <algds/str.h>
#include <algds/vec.h>
#include <ctype.h>
#include <string.h>
#define PANIC do { \
fprintf(stderr, "panic at %s:%d\n", __FILE__, __LINE__); \
abort(); \
} while (0)
StringVector read_mat() {
StringVector mat;
StringVector_init(&mat);
while (1) {
char *l = fgetline(stdin);
if (!l) {
return mat;
}
if (strlen(l) == 0) {
return mat;
}
int len = strlen(l);
if (l[len - 1] == '\n') {
l[len - 1] = '\0';
}
StringVector_push_back(&mat, l);
}
return mat;
}
char mat_read(StringVector *mat, int x, int y) {
const char *line = *StringVector_ref(mat, y);
return line[x];
}
char scan_column(StringVector *mat, int x, int *n) {
int out = 0;
int have_digit = 0;
for (int y = 0; y < mat->size - 1; y++) {
char c = mat_read(mat, x, y);
if (c == ' ') {
continue;
} else if (isdigit(c)) {
out = out * 10 + c - '0';
have_digit = 1;
} else {
puts(mat->buffer[y]);
PANIC;
}
}
if (have_digit) {
*n = out;
}
return mat_read(mat, x, mat->size - 1);
}
int main() {
StringVector lines = read_mat();
long maxlen = 0;
for (int i = 0; i < lines.size; i++) {
long len = strlen(lines.buffer[i]);
if (len > maxlen) {
maxlen = len;
}
}
for (int i = 0; i < lines.size; i++) {
long len = strlen(lines.buffer[i]);
if (len < maxlen) {
lines.buffer[i] = realloc((void*)lines.buffer[i], maxlen + 1);
memset((void*)lines.buffer[i]+len, ' ', maxlen-len);
((char*)lines.buffer[i])[maxlen] = '\0';
}
}
long ret = 0;
IntVector read_nums;
IntVector_init(&read_nums);
for (int x = strlen(lines.buffer[0]) - 1; x >= 0; x--) {
int cur = -1;
char sym = scan_column(&lines, x, &cur);
if (cur >= 0) {
IntVector_push_back(&read_nums, cur);
}
if (sym == '+') {
long sum = 0;
for (int i = 0; i < read_nums.size; i++) {
sum += read_nums.buffer[i];
}
ret += sum;
IntVector_free(&read_nums);
IntVector_init(&read_nums);
} else if (sym == '*') {
long prod = 1;
for (int i = 0; i < read_nums.size; i++) {
prod *= read_nums.buffer[i];
}
ret += prod;
IntVector_free(&read_nums);
IntVector_init(&read_nums);
}
}
printf("%ld\n", ret);
IntVector_free(&read_nums);
for (int i = 0; i < lines.size; i++) {
free((void*)lines.buffer[i]);
}
StringVector_free(&lines);
return 0;
}
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