Submission #3452590

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Source Code Expand

#include <string>
#include <vector>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <map>
#include <list>
#include <set>
#include <numeric>
#include <queue>
#include <stack>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <cstring>
#include <climits>
#include <cfloat>
#include <ctime>
#include <complex>
#include <cassert>
#include <array>
#include <bitset> 
#include <unordered_map>
#include <random>

using namespace std;
typedef long long LL;
typedef pair<int,int> P;

const int L=1e5+2;
char s[L];
vector<P> ret;
int main() {
	scanf("%s",s+1);
	int n=strlen(s+1);
	if(s[n]=='1'){
		puts("-1");
		return 0;
	}
	if(s[1]=='0'){
		puts("-1");
		return 0;
	}

	int cur=1;
	for(int i=1;i<n;i++){
		if(s[i]=='1'){
			if(s[n-i]=='0'){
				puts("-1");
				return 0;
			}
			while(cur<i){
				ret.push_back(P(cur,i));
				cur++;
			}
		}
	}
	ret.push_back(P(n-1,n));
	for(auto p:ret){
		printf("%d %d\n",p.first, p.second);
	}

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:35:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);
                 ^

Judge Result