Submission #4076333
Source Code Expand
#include <stdio.h> #include <iostream> #include <string> #include <sstream> #include <iterator> #include <algorithm> using namespace std; int countDiff(string a, string b){ int cnt = 0; for(unsigned int i = 0; i < a.length(); i++){ if(a[i] != b[i]){ cnt++; } } return cnt; } int findIndexFromBack(string str, char c){ int i = str.length() - 1; for(;i >= 0; i--){ if(str[i] == c){ break; } } if(i < 0){ return -1; } return i; } string exchangeChar(string str, int a, int b){ char buf = str[a]; str[a] = str[b]; str[b] = buf; return str; } string makeSmallest(int n, int k, string inp){ string copied, original; copied = original = inp; sort(begin(copied), end(copied)); int ind, i; i = 0; string res = ""; for(; i < n; i++){ if(inp[i] == copied[i]){ res += copied[i]; continue; } ind = findIndexFromBack(inp, copied[i]); if(ind < 0){ throw logic_error("index cant beb null"); } inp = exchangeChar(inp, i, ind); res += inp[i]; k--; if(k <= countDiff(original.substr(i+1, n), inp.substr(i+1, n))){ i++; break; } } res += inp.substr(i, n); return res; } int main (void){ int n, k; string inp; cin >> n >> k >> inp; cout << makeSmallest(n,k,inp) << endl; return 0; }
Submission Info
Submission Time | |
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Task | C - 辞書式順序ふたたび |
User | hanyutrans |
Language | C++ (GCC 5.4.1) |
Score | 0 |
Code Size | 1557 Byte |
Status | CE |
Compile Error
./Main.cpp: In function ‘std::string makeSmallest(int, int, std::string)’: ./Main.cpp:40:22: error: ‘begin’ was not declared in this scope sort(begin(copied), end(copied)); ^ ./Main.cpp:40:35: error: ‘end’ was not declared in this scope sort(begin(copied), end(copied)); ^