Submission #4014212

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
template <class T> inline void read(T &x) {
	x = 0; int c = getchar(), f = 1;
	for (; !isdigit(c); c = getchar()) if (c == 45) f = -1;
	for (; isdigit(c); c = getchar()) (x *= 10) += f*(c-48);
}
int n, m; char s[5005];
string rs[5], ss;
int main() {
	scanf("%s", s+1), n = (int)strlen(s+1);
	for (int i = 0; i < 5; i++) rs[i] = "{{{{{";
	for (int l = 1; l <= n; l++) {
		ss.clear();
		for (int r = l; r <= n; r++) {
			ss.push_back(s[r]); bool f = false;
			for (int i = 0; !f && i < 5; i++)
				if (ss == rs[i]) f = true;
			if (f) continue;
			if (ss >= rs[4]) break; rs[4] = ss;
			for (int i = 4; i; i--)
				if (rs[i] < rs[i-1])
					swap(rs[i-1], rs[i]);
		}
	}
	return read(m), cout << rs[m-1] << endl, 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", s+1), n = (int)strlen(s+1);
                                        ^

Judge Result