package contest180629; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; public class C { InputStream is; PrintWriter out; String INPUT = ""; void solve() { char[] s = ns().toCharArray(); try { out.println(new Parser3().eval(s)); } catch (Throwable e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static class Parser3 { // exp = exp2 ([+-] exp2)* // exp2 = exp3 ([*] exp3)* // exp3 = exp4 | '(' exp ')' // exp4 = -*digit+{[\.]digit+} // digit = [0-9] char[] str; int pos; int n; public long eval(char[] str) throws Exception { this.str = str; pos = 0; n = this.str.length; long ret = exp(); if(pos < n)throw new AssertionError(-1); return ret; } public long exp() throws Exception { long v = exp2(); while(pos < n && (str[pos] == '+' || str[pos] == '-')){ char op = str[pos]; pos++; if(pos >= n)throw new AssertionError(pos); long w = exp2(); if(op == '+'){ v += w; }else{ v -= w; } } return v; } public long exp2() throws Exception { long v = exp3(); while(pos < n && (str[pos] == '*')){ // char op = str[pos]; pos++; if(pos >= n)throw new AssertionError(pos); long w = exp3(); v *= w; } return v; } public long exp3() throws Exception { if(pos < n && str[pos] == '('){ pos++; long v = exp(); if(!(pos < n && str[pos] == ')'))throw new AssertionError(pos); pos++; return v; }else{ return exp4(); } } public long exp4() throws Exception { boolean minus = false; while(pos < n && str[pos] == '-'){ minus = !minus; pos++; } boolean present = false; long v = 0; while(pos < n && str[pos] >= '0' && str[pos] <= '9'){ v = v * 10 + digit(); present = true; } if(!present)throw new AssertionError(pos); if(minus)v = -v; return v; } public long digit() throws Exception { if(pos == n)throw new AssertionError(pos); return str[pos++] - '0'; } } void run() throws Exception { is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes()); out = new PrintWriter(System.out); long s = System.currentTimeMillis(); solve(); out.flush(); if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); // Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){ // @Override // public void run() { // long s = System.currentTimeMillis(); // solve(); // out.flush(); // if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); // } // }; // t.start(); // t.join(); } public static void main(String[] args) throws Exception { new C().run(); } private byte[] inbuf = new byte[1024]; public int lenbuf = 0, ptrbuf = 0; private int readByte() { if(lenbuf == -1)throw new InputMismatchException(); if(ptrbuf >= lenbuf){ ptrbuf = 0; try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); } if(lenbuf <= 0)return -1; } return inbuf[ptrbuf++]; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; } private double nd() { return Double.parseDouble(ns()); } private char nc() { return (char)skip(); } private String ns() { int b = skip(); StringBuilder sb = new StringBuilder(); while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ') sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } private char[] ns(int n) { char[] buf = new char[n]; int b = skip(), p = 0; while(p < n && !(isSpaceChar(b))){ buf[p++] = (char)b; b = readByte(); } return n == p ? buf : Arrays.copyOf(buf, p); } private int[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private long[] nal(int n) { long[] a = new long[n]; for(int i = 0;i < n;i++)a[i] = nl(); return a; } private char[][] nm(int n, int m) { char[][] map = new char[n][]; for(int i = 0;i < n;i++)map[i] = ns(m); return map; } private int[][] nmi(int n, int m) { int[][] map = new int[n][]; for(int i = 0;i < n;i++)map[i] = na(m); return map; } private int ni() { return (int)nl(); } private long nl() { long num = 0; int b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); } }