diff --git a/code_study/Baekjoon/python/2010.py b/code_study/Baekjoon/python/2010.py
new file mode 100644
index 0000000..7916673
--- /dev/null
+++ b/code_study/Baekjoon/python/2010.py
@@ -0,0 +1,10 @@
+import sys
+input = sys.stdin.readline
+ans = 0
+for i in range(int(input())) :
+    if i == 0 :
+        ans += int(input())
+    else :
+        ans = ans - 1 + int(input())
+
+print(ans)
\ No newline at end of file
diff --git a/code_study/Baekjoon/ts/2143.ts b/code_study/Baekjoon/ts/2143.ts
new file mode 100644
index 0000000..30887c9
--- /dev/null
+++ b/code_study/Baekjoon/ts/2143.ts
@@ -0,0 +1,60 @@
+export {};
+const input = require("fs").readFileSync(0).toString().trim().split('\n');
+
+const T: number = Number(input[0]);
+const [n, m]: number[] = [Number(input[1]), Number(input[3])];
+const A: number[] = input[2].split(" ").map(Number);
+const B: number[] = input[4].split(" ").map(Number);
+
+let sumA: number[] = [];
+for(let i=0; i<n; i++) {
+    let temp: number = 0
+    for(let j=i; j<n; j++) {
+        temp += A[j];
+        sumA.push(temp);
+    }
+}
+
+let sumB: number[] = [];
+for(let i=0; i<m; i++) {
+    let temp: number = 0
+    for(let j=i; j<m; j++) {
+        temp += B[j];
+        sumB.push(temp);
+    }
+}
+
+sumA.sort((a,b) => a - b);
+sumB.sort((a,b) => b - a);
+const [N, M]: number[] = [sumA.length, sumB.length];
+
+let [ptA, ptB]: number[] = [0, 0];
+let ans: number = 0;
+
+while (ptA < N && ptB < M) {
+    const curr: number = sumA[ptA] + sumB[ptB];
+
+    if(curr !== T ) {
+        if(T > curr) ptA++;
+        else if(T < curr) ptB++;
+        continue;
+    }
+
+    let cntA: number = 0;
+    let valA: number = sumA[ptA];
+    while(ptA < N && sumA[ptA] === valA) {
+        cntA++;
+        ptA++;
+    }
+
+    let cntB: number = 0;
+    let valB: number = sumB[ptB];
+    while(ptB < M && sumB[ptB] === valB) {
+        cntB++;
+        ptB++;
+    }
+
+    ans += cntA*cntB;
+}
+
+console.log(ans);
\ No newline at end of file