The first line gives a string s and the second line gives the number of queries q. Each of the next q lines gives two numbers a and b. For each query print, on its own line, the part of s from the a-th character to the b-th character, including both ends. In this problem positions count from 1, the way people count. For example, if s is "codelper" and a = 1, b = 4, the answer is "code".
Input
s: lowercase letters and digits, length 1 to 1,000. 1 ≤ q ≤ 1,000. 1 ≤ a ≤ b ≤ length of s
Output
q lines, the cut string for each query
Example 1 · stdin
codelper
3
1 4
5 8
3 3
stdout
code
lper
d
main.py
Error List00F8 ↓ · ⇧F8 ↑
Input (stdin)
When you run, these lines are fed to input()/stdin in order (the program doesn't stop to ask).
$ Ready
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In other languagesShow solutions by language · 8 languages
The second argument of the cutting function means different things. End position (excluded): Python s[a-1:b], JS/TS s.slice(a - 1, b), Java s.substring(a - 1, b). Length: C# s.Substring(a - 1, b - a + 1), C++ s.substr(a - 1, b - a + 1), Craykon s.Substring(a - 1, b - a + 1). C has no cutting function: print from a start pointer with a length, printf("%.*s", b - a + 1, s + a - 1). Three traps: (1) if you don't convert the 1-based positions to 0-based indexes (s[a:b]), everything shifts by one. (2) Passing a length to Java substring or an end position to C# Substring gives a different string or an out-of-range exception. (3) C++ substr silently cuts to the end when the length is too big, so the bug is easy to miss (Python slices also clip silently). JS substr(start, length) is a legacy function to avoid, and substring differs from slice in that it swaps its arguments if they're reversed.
Pythonmain.py · 5 lines
s = input()q = int(input())for _ in range(q): a, b = map(int, input().split()) print(s[a - 1:b])
JavaScriptmain.js · 7 lines
const [s, q, ...rest] = require("fs").readFileSync(0, "utf8").split("\n").map((x) => x.trim());const out = [];for (let i = 0; i < Number(q); i++) { const [a, b] = rest[i].split(" ").map(Number); out.push(s.slice(a - 1, b));}console.log(out.join("\n"));
TypeScriptmain.ts · 8 lines
import { readFileSync } from "node:fs";const [s, q, ...rest]: string[] = readFileSync(0, "utf8").split("\n").map((x) => x.trim());const out: string[] = [];for (let i = 0; i < Number(q); i++) { const [a, b]: number[] = rest[i].split(" ").map(Number); out.push(s.slice(a - 1, b));}console.log(out.join("\n"));
JavaMain.java · 17 lines
import java.io.BufferedReader;import java.io.InputStreamReader;public class Main { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String s = br.readLine().trim(); int q = Integer.parseInt(br.readLine().trim()); StringBuilder out = new StringBuilder(); for (int i = 0; i < q; i++) { String[] p = br.readLine().trim().split(" "); int a = Integer.parseInt(p[0]), b = Integer.parseInt(p[1]); out.append(s.substring(a - 1, b)).append('\n'); } System.out.print(out); }}
C#Main.cs · 19 lines
using System;using System.Text;class Program{ static void Main() { string s = Console.ReadLine().Trim(); int q = int.Parse(Console.ReadLine()); var out_ = new StringBuilder(); for (int i = 0; i < q; i++) { string[] p = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries); int a = int.Parse(p[0]), b = int.Parse(p[1]); out_.Append(s.Substring(a - 1, b - a + 1)).Append('\n'); } Console.Write(out_); }}
C++main.cpp · 13 lines
#include <iostream>#include <string>int main() { std::ios::sync_with_stdio(false); std::string s; int q, a, b; std::cin >> s >> q; for (int i = 0; i < q; i++) { std::cin >> a >> b; std::cout << s.substr(a - 1, b - a + 1) << '\n'; }}
Cmain.c · 12 lines
#include <stdio.h>int main(void) { char s[1001]; int q, a, b; if (scanf("%1000s %d", s, &q) != 2) return 0; for (int i = 0; i < q; i++) { scanf("%d %d", &a, &b); printf("%.*s\n", b - a + 1, s + a - 1); } return 0;}
Craykonmain.cray · 9 lines
s = Console.ReadLine().Trim();q = Console.ReadLine().ToNumber();for (i = 0; i < q; i++){ ab = Console.ReadNumbers(); a = ab[0]; b = ab[1]; Console.WriteLine(s.Substring(a - 1, b - a + 1));}