Submission #770175

#	Time	Username	Problem	Language	Result	Execution time	Memory
770175		allllekssssa	Election (BOI18_election)	C++14	28 / 100	5 ms	980 KiB

election

#include<stdio.h>
#include<iostream>
#include<algorithm>

using namespace std;

const int maxN = 3000;
string s;
int n, q;
int d[maxN];

int main() {

	cin >> n;
	cin >> s;
	cin >> q;

	while(q--) {
		int l, r;
		scanf("%d%d", &l, &r);

		int cur = 0;
		int mm = 0;
		for (int i = l; i <= r; i++) {
			if (s[i - 1] == 'T') ++cur; else cur--;
			mm = max(mm, cur);
			d[i] = mm;
		}

		cur = 0;
		mm = 0;
		for (int i = r; i>=l; i--) {
			d[i]+=mm;
			if (s[i - 1] == 'T') ++cur; else cur--;
			mm = max(mm, cur);
		}

		int mx = 0;
		for (int i = l; i<=r; i++) {
			mx = max(mx, d[i]);
		}
		printf("%d\n", mx);
	}
}

Compilation message (stderr)

election.cpp: In function 'int main()':
election.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%d%d", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 28 / 28
• Subtask 2: 0 / 54
• Subtask 3: 0 / 18