var a = 15;
var b = 3;
var c = 2;
var money = 200;
var n = 0;
for (var i = 1; i <= money / a; i++) {
for (var j = 1; j <= money / b; j++) {
for (var k = 1; k <= money / c; k++) {
if (i * a + j * b + k*c == 200) {
n++;
}
}
}
}
document.write("<h5>共有" + n + "种可能 </h5>");
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