var chunk = require('fs').readFileSync('/dev/stdin', 'utf8');
var lines = chunk.split('\n');


var calc = {'+': function (a, b) {return a + b; }, '-': function (a, b) {return a - b; }, '*': function (a, b) {return a * b; }, '/': function (a, b) {return Math.floor(a / b); }};


for (var i = 0; i < lines.length; i ++) {
    var arr = lines[i].split(' ');
    var a = Number(arr[0]);
    var op = arr[1];
    var b = Number(arr[2]);
    if (op === '?') {
        break;
    }
    console.log(calc[op](a, b));
}