Submission #337554

#	Time	Username	Problem	Language	Result	Execution time	Memory
337554		tengiz05	Weighting stones (IZhO11_stones)	C++17	0 / 100	0 ms	364 KiB

stones

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
const int mod = 1e9+7, N = 2e5+5;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val);}
int a[N], n, m, k;

void solve(int test_case){
	int i, j;
	cin >> n;
	int mxl=0, mxr=0;
	int cl=0, cr=0;
	set<int> s1, s2;
/*	s1.insert(0);
	s2.insert(0);
	s1.insert(0);
	s2.insert(0);*/
	for(i=0;i<n;i++){
		int r, s;
		cin >> r >> s;
		if(s == 1){
			mxl = max(mxl, r);
			cl++;
			s1.insert(r);
		}else {
			mxr = max(mxr, r);
			cr++;
			s2.insert(r);
		}
		if(cl == 0){
			cout << "<\n";
		}else if(cr == 0){
			cout << ">\n";
		}
		else if(mxl > mxr){
			int val = (*s1.rbegin())-(*s1.begin())+1;
			if(s1.size() > 1 && val == s1.size() || cl > cr || cr == 1)cout << ">\n";
			else cout << "?\n";
		}else {
			int val = (*s2.rbegin())-(*s2.begin())+1;
			if(s2.size() > 1 && val == s2.size() || cr > cl || cl == 1)cout << "<\n";
			else cout << "?\n";	
		}
	}
	return;
}

signed main(){
	FASTIO;
#define MULTITEST 0
#if MULTITEST
	int ___T;
	cin >> ___T;
	for(int T_CASE = 1; T_CASE <= ___T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message (stderr)

stones.cpp: In function 'void solve(long long int)':
stones.cpp:45:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::set<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |    if(s1.size() > 1 && val == s1.size() || cl > cr || cr == 1)cout << ">\n";
      |                        ~~~~^~~~~~~~~~~~
stones.cpp:45:21: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   45 |    if(s1.size() > 1 && val == s1.size() || cl > cr || cr == 1)cout << ">\n";
      |       ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
stones.cpp:49:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::set<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |    if(s2.size() > 1 && val == s2.size() || cr > cl || cl == 1)cout << "<\n";
      |                        ~~~~^~~~~~~~~~~~
stones.cpp:49:21: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   49 |    if(s2.size() > 1 && val == s2.size() || cr > cl || cl == 1)cout << "<\n";
      |       ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
stones.cpp:17:9: warning: unused variable 'j' [-Wunused-variable]
   17 |  int i, j;
      |         ^

• Subtask 1: 0 / 100