提出 #577674

---

ソースコード 拡げる

#include <iostream>
#include <cstdio>

using namespace std;

int N;
char c[200000];

int test(int x)
{
    int a = x, b = x, cnt = 0;

    while( x >= 0 && x < N )
    {
        cnt++;
        if( c[x] == '<' ) x = --a;
        else x = ++b;
    }

    return cnt;
}

int main()
{
    scanf("%d", &N);
    scanf("%s", c);

    int l = -1, r = N;

    while( l+2 != r )
    {
        int ml = (l*2+r)/3;
        int mr = (l+r*2)/3;

        if( test(ml) < test(mr) ) l = ml;
        else r = mr;
    }

    printf("%d\n", test(l+1));
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
./Main.cpp:26:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", c);
                   ^

ジャッジ結果