Submission #492442

#	Time	Username	Problem	Language	Result	Execution time	Memory
492442		aris12345678	Untitled (POI11_tem)	C++14	0 / 100	223 ms	30624 KiB

Main

#include <bits/stdc++.h>
using namespace std;

typedef pair<int, int> pii;
#define X first
#define Y second

const int mxN = 1000005;
int x[mxN], y[mxN];

int main() {
    int n;
    scanf("%d", &n);
    stack<pii> st;
    int ans = 0;
    for(int i = 0; i < n; i++) {
        scanf("%d %d", &x[i], &y[i]);
        if(st.empty())
            st.push({x[i], y[i]});
        else if(st.top().X <= y[i])
            st.push({x[i], y[i]});
        else {
            ans = max(ans, int(st.size()));
            while(!st.empty())
                st.pop();
            st.push({x[i], y[i]});
        }
    }
    ans = max(ans, int(st.size()));
    printf("%d\n", ans);
    return 0;
}

Compilation message (stderr)

tem.cpp: In function 'int main()':
tem.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
tem.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         scanf("%d %d", &x[i], &y[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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