#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static struct Ins {
	char op[4];
	int arg;
} prog[1024];
static int acc;
static int pc;
static void step(void) {
	if (!strcmp(prog[pc].op, "acc")) {
		acc += prog[pc].arg;
	} else if (!strcmp(prog[pc].op, "jmp")) {
		pc += prog[pc].arg;
		return;
	}
	pc++;
}
int main(void) {
	int i = 0;
	while (EOF != scanf("%s %d\n", prog[i].op, &prog[i].arg)) {
		i++;
	}
	int ran[1024] = {0};
	while (!ran[pc]++) {
		step();
	}
	printf("%d\n", acc);
}