/* このコード、と~おれ! Be accepted! ∧_∧  (。・ω・。)つ━☆・*。 ⊂   ノ    ・゜+.  しーJ   °。+ *´¨)          .· ´¸.·*´¨) ¸.·*¨)           (¸.·´ (¸.·'* ☆ */ #include #include #include #include #include #include #include #include #include #include #include #include #pragma GCC optimize("Ofast") #define rep(i, n) for(int i = 0; i < (n); ++i) #define rep1(i, n) for(int i = 1; i <= (n); ++i) #define rep2(i, n) for(int i = 2; i < (n); ++i) #define repr(i, n) for(int i = n; i >= 0; --i) #define reprm(i, n) for(int i = n - 1; i >= 0; --i) #define printynl(a) printf(a ? "yes\n" : "no\n") #define printyn(a) printf(a ? "Yes\n" : "No\n") #define printYN(a) printf(a ? "YES\n" : "NO\n") #define printin(a) printf(a ? "possible\n" : "inposible\n") #define printdb(a) printf("%.50lf\n", a)//少数出力 #define printdbd(a) printf("%.16lf\n", a)//少数出力(桁少なめ) #define prints(s) printf("%s\n", s.c_str())//string出力 #define all(x) (x).begin(), (x).end() #define allsum(a, b, c) ((a + b) * c / 2)//等差数列の和、初項,末項,項数 #define pb push_back #define priq priority_queue #define rpriq priq, greater> #define deg_to_rad(deg) (((deg)/360.0)*2.0*PI) #define rad_to_deg(rad) (((rad)/2.0/PI)*360.0) #define Please return #define AC 0 using ll = long long; const int INF = 1073741823; const int MINF = -1073741823; const ll LINF = ll(4661686018427387903); const ll MOD = 1000000007; const double PI = acos(-1); using namespace std; void scans(string& str) { char c; scanf("%c", &c); if (c == '\n')scanf("%c", &c);//最初の改行対策 while (c != '\n' && c != -1) { str += c; scanf("%c", &c); } } void scanc(char& str) { char c; scanf("%c", &c); if (c == -1)return; while (c == '\n') { scanf("%c", &c); } str = c; } double acot(double x) { return PI / 2 - atan(x); } /*-----------------------------------------ここからコード-----------------------------------------*/ int main() { string s; scans(s); string ss = s; sort(all(s)); reverse(all(s)); int i = s.length() - 2, j = i; while (i > 0 && s[i] == s[s.length() - 1]) { --i; if (s[i] == '0')--j; } swap(s[(s.find('0') == string::npos ? s.length() - 1 : j)], s[i]); if (s == ss || s[0] == '0')s = "-1"; prints(s); Please AC; }