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gamerank.js
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gamerank.js
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'use strict';
process.stdin.resume();
process.stdin.setEncoding('utf-8');
let inputString = '';
let currentLine = 0;
process.stdin.on('data', function(inputStdin) {
inputString += inputStdin;
});
process.stdin.on('end', function() {
inputString = inputString.split('\n');
main();
});
function readLine() {
return inputString[currentLine++];
}
function main() {
const story = readLine().split('');
let rank = 25;
let stars = 0;
let streak = 0;
const tier = n => {
if (n >= 21 && n <= 25) {
return 2;
} else if (n >= 16 && n <= 20) {
return 3;
} else if (n >= 11 && n <= 15) {
return 4;
} else return 5;
}
const advance = () => {
if (stars === tier(rank) + 1) {
rank--;
stars = 1;
}
}
const lose = () => {
streak = 0;
if (rank <= 20) {
stars--;
}
if (stars < 0) {
if (rank == 20) stars = 0;
else {
rank++;
stars = tier(rank) - 1;
}
}
}
const win = () => {
streak++;
let gotBonus = false;
// winstreak case
if (rank >= 6 && streak >= 3) {
stars++;
advance();
}
// regular case
stars++;
advance();
}
for (let i = 0; i < story.length; i++) {
if (rank > 0) {
if (story[i] === 'W') win();
else lose();
}
}
console.log(!rank ? 'Legend' : rank);
}