var line, i, eof_i;

line = require('fs').readFileSync('/dev/stdin', 'ascii').split("\n");
for (i = line.length - 1; i >= 0; i--)
    if (line[i].indexOf("?") !== -1) eof_i = i;
    else line.pop();

for (i in line)
    line[i] = Math.floor(eval(line[i]));

console.log(line.join("\n"));