Submission #1354672

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int (i)=0;(i)<(int)(n);(i)++)
#define REPO(i,n) for(int (i)=1; (i)<=(int)(n); (i)++)
#define SZ(v) ((int)(v).size())
#define ALL(v) (v).begin(),(v).end()
#define one first
#define two second
typedef long long ll;
typedef pair<int, int> pi;
const int INF = 0x3f2f1f0f;
const ll LINF = 1ll * INF * INF;

const int MAX_N = 2e5 + 100;

char S[MAX_N]; int N, Nt[MAX_N], Pr[MAX_N];
bool Chk[MAX_N]; int Ans;
int main() {
	scanf("%s", S+1); N = strlen(S+1); Ans = N;
	for(int i=1; i<=N; i++) Nt[i] = i+1, Pr[i] = i-1;
	for(int i=1; i<=N; ) {
		if(Chk[i]) continue;
		int a = i, b = Nt[i];
		if(b > N) break;
		if(S[a] == 'S' && S[b] == 'T') {
			Chk[a] = Chk[b] = true;
			Ans -= 2;
			Nt[Pr[a]] = Nt[b];
			Pr[Nt[b]] = Pr[a];
			i = Pr[a];
		}else i = Nt[a];
	}
	printf("%d\n", Ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", S+1); N = strlen(S+1); Ans = N;
                  ^

Judge Result