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bitsequalizer.js
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bitsequalizer.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 makeSwap(a, b) {
const memo = {};
b.forEach((c, i) => {
memo[i] = c;
});
a.forEach((c, i) => {
b[i] = memo[a[i]];
});
return doSwap(b);
}
function main() {
let t = parseInt(readLine());
let c = 1;
while(t--) {
const a = readLine().split('');
const b = readLine().split('');
let diff = 0;
let oneDiff = 0;
let ones = 0;
let zeros = 0;
a.forEach((c, i) => {
// get single difs
if (a[i] !== b[i]) diff++;
if (a[i] === '?' && b[i] === '1') oneDiff--;
// get multi diffs
else if (a[i] === '0' && b[i] === '1') {
zeros++;
oneDiff--;
} else if (a[i] === '1' && b[i] === '0') {
ones++;
oneDiff++;
}
});
if (oneDiff > 0)console.log(`Case ${c}: ${-1}`);
else console.log(`Case ${c}: ${diff - Math.min(ones, zeros)}`);
c++
}
}