0_0_19571572_19829.c: In function 'main':
0_0_19571572_19829.c:17:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i < n; scanf("%d", &sa[i++]));
^
0_0_19571572_19829.c:17:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_19571572_19829.c:19:18: error: redefinition of 'i'
for (int i = 0; i <= n - m; ++i) dp[i] = sa[i] + max(0, i ? dp[i - 1] : 0);
^
0_0_19571572_19829.c:17:18: note: previous definition of 'i' was here
for (int i = 0; i < n; scanf("%d", &sa[i++]));
^
0_0_19571572_19829.c:19:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i <= n - m; ++i) dp[i] = sa[i] + max(0, i ? dp[i - 1] : 0);
^
0_0_19571572_19829.c:21:18: error: redefinition of 'i'
for (int i = 1; i < m; ++i)
^
0_0_19571572_19829.c:19:18: note: previous definition of 'i' was here
for (int i = 0; i <= n - m; ++i) dp[i] = sa[i] + max(0, i ? dp[i - 1] : 0);
^
0_0_19571572_19829.c:21:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 1; i < m; ++i)
^
0_0_19571572_19829.c:25:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int j = 1; j <= n - m; ++j)
^
0_0_19571572_19829.c:33:18: error: redefinition of 'i'
for (int i = 0; i <= n - m; ++i) ans = max(ans, dp[i]);
^
0_0_19571572_19829.c:21:18: note: previous definition of 'i' was here
for (int i = 1; i < m; ++i)
^
0_0_19571572_19829.c:33:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i <= n - m; ++i) ans = max(ans, dp[i]);
^
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